SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

MFS Series Trust X – ‘N-Q’ for 8/31/17

On:  Thursday, 10/26/17, at 2:35pm ET   ·   Effective:  10/26/17   ·   For:  8/31/17   ·   Accession #:  1193125-17-320992   ·   File #:  811-04492

Previous ‘N-Q’:  ‘N-Q’ on 10/26/17 for 8/31/17   ·   Next:  ‘N-Q’ on 12/20/17 for 10/31/17   ·   Latest:  ‘N-Q’ on 4/23/19 for 2/28/19

Find Words in Filings emoji
 
  in    Show  and   Hints

  As Of                Filer                Filing    For·On·As Docs:Size              Issuer               Agent

10/26/17  MFS Series Trust X                N-Q         8/31/17    2:3.3M                                   Donnelley … Solutions/FAMFS Absolute Return Fund A (MRNAX) — B (MRNBX) — C (MRNCX) — I (MRNIX) — R1 (MRNRX) — R2 (MRNSX) — R3 (MRNTX) — R4 (MRNUX) — R6 (MRNVX)MFS Aggressive Growth Allocation Fund 529A (EAGTX) — 529B (EBAAX) — 529C (ECAAX) — A (MAAGX) — B (MBAGX) — C (MCAGX) — I (MIAGX) — R1 (MAAFX) — R2 (MAWAX) — R3 (MAAHX) — R4 (MAALX)MFS Blended Research Growth Equity Fund A (BRWAX) — B (BRWBX) — C (BRWCX) — I (BRWJX) — R1 (BRWRX) — R2 (BRWSX) — R3 (BRWTX) — R4 (BRWUX) — R6 (BRWVX)MFS Blended Research Mid Cap Equity Fund A (BMSFX) — B (BMSBX) — C (BMSDX) — I (BMSLX) — R1 (BMSRX) — R2 (BMSSX) — R3 (BMSTX) — R4 (BMSVX) — R6 (BMSYX)MFS Blended Research Small Cap Equity Fund 529A (BRSNX) — 529B (BRSQX) — 529C (BRSWX) — A (BRSDX) — B (BRSBX) — C (BRSHX) — I (BRSJX) — R1 (BRSPX) — R2 (BRSSX) — R3 (BRSTX) — R4 (BRSUX) — R6 (BRSYX)MFS Blended Research Value Equity Fund A (BRUDX) — B (BRUEX) — C (BRUGX) — I (BRUHX) — R1 (BRUJX) — R2 (BRUKX) — R3 (BRULX) — R4 (BRUMX) — R6 (BRUNX)MFS Conservative Allocation Fund 529A (ECLAX) — 529B (EBCAX) — 529C (ECACX) — A (MACFX) — B (MACBX) — C (MACVX) — I (MACIX) — R1 (MACKX) — R2 (MCARX) — R3 (MACNX) — R4 (MACJX)MFS Emerging Markets Equity Fund A (MEMAX) — B (MEMBX) — C (MEMCX) — I (MEMIX) — R1 (MEMRX) — R2 (MEMFX) — R3 (MEMGX) — R4 (MEMHX) — R6 (MEMJX)MFS Growth Allocation Fund 529A (EAGWX) — 529B (EBGWX) — 529C (ECGWX) — A (MAGWX) — B (MBGWX) — C (MCGWX) — I (MGWIX) — R1 (MAGMX) — R2 (MGALX) — R3 (MAGEX) — R4 (MAGJX)MFS International Diversification Fund A (MDIDX) — B (MDIFX) — C (MDIGX) — I (MDIJX) — R1 (MDIOX) — R2 (MDIKX) — R3 (MDIHX) — R4 (MDITX)MFS International Growth Fund A (MGRAX) — B (MGRBX) — C (MGRCX) — I (MQGIX) — R1 (MGRRX) — R2 (MGRQX) — R3 (MGRTX) — R4 (MGRVX) — R6 (MGRDX)MFS International Intrinsic Value Fund A (MGIAX) — B (MGIBX) — C (MGICX) — I (MINIX) — R1 (MINRX) — R2 (MINFX) — R3 (MINGX) — R4 (MINHX) — R6 (MINJX)MFS Managed Wealth Fund A (MNWAX) — B (MNWBX) — C (MNWCX) — I (MNWIX) — R1 (MNWRX) — R2 (MNWSX) — R3 (MNWTX) — R4 (MNWUX)MFS Moderate Allocation Fund 529A (EAMDX) — 529B (EBMDX) — 529C (ECMAX) — A (MAMAX) — B (MMABX) — C (MMACX) — I (MMAIX) — R1 (MAMFX) — R2 (MARRX) — R3 (MAMHX) — R4 (MAMJX)

Quarterly Schedule of Portfolio Holdings of a Management Investment Company   —   Form N-Q
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: N-Q         Mfs Series Trust X N-Q                              HTML   1.19M 
 2: EX-99.CERT  Certifications                                      HTML     18K 


N-Q   —   Mfs Series Trust X N-Q


This is an HTML Document rendered as filed.  [ Alternative Formats ]



  MFS SERIES TRUST X N-Q  

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF

REGISTERED MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-4492

MFS SERIES TRUST X

(Exact name of registrant as specified in charter)

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of principal executive offices) (Zip code)

Christopher R. Bohane

Massachusetts Financial Services Company

111 Huntington Avenue

Boston, Massachusetts 02199

(Name and address of agents for service)

Registrant’s telephone number, including area code: (617) 954-5000

Date of fiscal year end: May 31*

Date of reporting period: August 31, 2017

 

* This Form N-Q pertains only to the following series of the Registrant with a fiscal year of May 31: MFS Absolute Return Fund, MFS Aggressive Growth Allocation Fund, MFS Blended Research Growth Equity Fund, MFS Blended Research Mid Cap Equity Fund, MFS Blended Research Small Cap Equity Fund, MFS Blended Research Value Equity Fund, MFS Conservative Allocation Fund, MFS Emerging Markets Equity Fund, MFS Growth Allocation Fund, MFS International Diversification Fund, MFS International Growth Fund, MFS International Value Fund, MFS Managed Wealth Fund, and MFS Moderate Allocation Fund. The remaining series of the Registrant have a fiscal year end other than May 31.


ITEM 1. SCHEDULE OF INVESTMENTS.


QUARTERLY REPORT

August 31, 2017

 

LOGO

 

MFS® ABSOLUTE RETURN FUND

 

LOGO


PORTFOLIO OF INVESTMENTS

8/31/17 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

 

Issuer    Shares/Par     Value ($)  
Bonds - 93.8%  
Asset-Backed & Securitized - 20.0%  
A Voce CLO Ltd., 2014-1A, “A2R”, FLR, 2.854%, (U.S. LIBOR-3mo. + 1.55%) 7/15/2026 (n)    $ 575,000     $ 574,984  
A Voce CLO Ltd., 2014-1A, “BR”, FLR, 3.454%, (U.S. LIBOR-3mo. + 2.15%) 7/15/2026 (n)      747,000       746,974  
AIMCO Properties CLO LP, 2014-AA, “B1R”, FLR, 2.907%, (U.S. LIBOR-3mo. + 1.6%) 7/20/2026 (n)      565,000       564,427  
AmeriCredit Automobile Receivables Trust, 2016-3, “A2A”, 1.37%, 11/08/2019      257,628       257,496  
Americredit Automobile Receivables Trust, 2017-2, “C”, 2.97%, 3/20/2023      605,000       615,258  
Ares CLO Ltd., 2013-3A, “B1R”, FLR, 2.804%, (U.S. LIBOR-3mo. + 1.5%) 10/17/2024 (n)      709,000       708,991  
ARI Fleet Lease Trust, 2016-A, “A2”, 1.82%, 7/15/2024 (n)      358,978       359,251  
Atrium CDO Corp., 2010-A, “B1R”, FLR, 2.754%, (U.S. LIBOR-3mo. + 1.45%) 7/16/2025 (n)      849,000       848,990  
Atrium CDO Corp., 2011-A, “BR”, FLR, 2.812%, (U.S. LIBOR-3mo. + 1.5%) 10/23/2025 (n)      575,000       575,365  
Avery Point CLO Ltd., 2014-1A, “CR”, FLR, 3.664%, (U.S. LIBOR-3mo. + 2.35%) 4/25/2026 (n)      562,000       565,443  
Babson CLO Ltd., 2013-IIA, “BR”, FLR, 2.804%, (U.S. LIBOR-3mo. + 1.5%) 10/17/2026 (n)      863,000       867,005  
Ballyrock Ltd., 2014-1A, “A2R”, FLR, 3.007%, (U.S. LIBOR-3mo. + 1.7%) 10/20/2026 (n)      561,000       561,186  
Capital Auto Receivables Asset Trust, 2016-3, “A2A”, 1.36%, 4/22/2019      117,233       117,187  
Capital One Multi-Asset Execution Trust, 2016-A4, “A4”, 1.33%, 6/15/2022      1,360,000       1,353,168  
CD Commercial Mortgage Trust, 2017-CD4, “XA”, 1.484%, 5/10/2050 (i)      5,837,000       541,154  
Cent CLO LP, 2014-21A, “A2AR”, FLR, 3.017%, (U.S. LIBOR-3mo. + 1.7%) 7/27/2026 (n)      458,549       459,569  
Cent CLO LP, 2014-21A, “BR”, FLR, 3.717%, (U.S. LIBOR-3mo. + 2.4%) 7/27/2026 (n)      323,186       324,019  
Chesapeake Funding II LLC, 2017-2A, “B”, 2.81%, 7/15/2029 (n)      396,000       400,356  
Chesapeake Funding II LLC, 2017-2A, “C”, 3.01%, 7/15/2029 (n)      200,000       202,261  
Chesapeake Funding II LLC, 2017-3A, “B”, 2.57%, 8/15/2029 (z)      256,000       256,716  
Chrysler Capital Auto Receivables Trust 2016-B, “A2”, 1.36%, 1/15/2020 (n)      288,888       288,673  
Colony Starwood Homes, 2016-2A, “A”, FLR, 2.478%, (LIBOR-1mo. + 1.25%) 12/17/2033 (n)      808,147       815,688  
CPS Auto Trust, 2016-D, “B”, 2.11%, 3/15/2021 (n)      678,000       676,911  
CPS Auto Trust, 2017-C, “C”, 2.86%, 6/15/2023 (n)      390,000       390,567  
Credit Acceptance Auto Loan Trust, 2015-2A, “A”, 2.4%, 2/15/2023 (n)      742,000       743,701  
Credit Acceptance Auto Loan Trust, 2016-3A, “A”, 2.15%, 4/15/2024 (n)      807,000       806,618  
Credit Acceptance Auto Loan Trust, 2017-2A, “B”, 3.02%, 4/15/2026 (n)      860,000       863,176  
Cutwater Ltd., 2014-1A, “A2R”, FLR, 3.004%, (U.S. LIBOR-3mo. + 1.7%) 7/15/2026 (n)      1,250,000       1,252,594  
Drive Auto Receivables Trust, 2016-CA, “A3”, 1.67%, 11/15/2019 (n)      740,000       740,151  
Drive Auto Receivables Trust, 2017-1, “B”, 2.36%, 3/15/2021      247,000       247,781  
Dryden Senior Loan Fund, 2014-31A, “CR”, FLR, 3.404%, (LIBOR-3mo. + 2.1%) 4/18/2026 (n)      260,000       259,373  
Dryden Senior Loan Fund, 2014-34A, “BR”, FLR, 2.854%, (LIBOR-3mo. + 1.55%) 10/15/2026 (n)      275,000       274,721  
Dryden Senior Loan Fund, 2014-34A, “CR”, FLR, 3.454%, (LIBOR-3mo. + 2.15%) 10/15/2026 (n)      353,729       357,612  
DT Auto Owner Trust, 2017-2A, “C”, 3.03%, 1/17/2023 (n)      664,000       665,605  
DT Auto Owner Trust, 2017-3A, “C”, 3.01%, 5/15/2023 (z)      431,000       431,692  
Enterprise Fleet Financing LLC, 1.74%, 2/22/2022 (n)      404,835       404,739  
Enterprise Fleet Financing LLC, 2017-1, “A2”, 2.13%, 7/20/2022 (n)      370,000       371,917  
Exeter Automobile Receivables Trust, 2015-2A, “A”, 1.54%, 11/15/2019 (n)      19,061       19,057  
Exeter Automobile Receivables Trust, 2016-3A, “A”, 1.84%, 11/16/2020 (n)      488,889       488,701  
Exeter Automobile Receivables Trust, 2017-1A, “A”, 1.96%, 3/15/2021 (n)      259,496       259,061  
Flagship Credit Auto Trust, 2016-1, “A”, 2.77%, 12/15/2020 (n)      260,626       262,379  
Ford Credit Auto Owner Trust, 2014-1,“A”, 2.26%, 11/15/2025 (n)      227,000       229,206  
Ford Credit Auto Owner Trust, 2014-2,“A”, 2.31%, 4/15/2026 (n)      1,263,000       1,277,632  
GMF Floorplan Owner Revolving Trust, 2017-A1, “A”, 2.22%, 1/18/2022 (n)      560,000       563,723  
GS Mortgage Securities Trust, 2017-GS6, “XA”, 1.199%, 5/10/2050 (i)      5,249,107       442,301  
GS Mortgage Securities Trust, 2017-GS7, “XA”, 1.29%, 8/10/2050 (i)      5,279,000       461,860  
HarbourView CLO VII Ltd., “B1R”, FLR, 2.967%, (U.S. LIBOR-3mo. + 1.65%) 11/18/2026 (n)      890,237       890,226  
HarbourView CLO VII Ltd., 7A, “CR”, FLR, 3.697%, (U.S. LIBOR-3mo. + 2.38%) 11/18/2026 (n)      573,237       573,645  
Hyundai Auto Receivables Trust 2015-C, “A2A”, 0.99%, 11/15/2018      13,336       13,330  
JPMorgan Chase Commercial Mortgage Securities Corp., 1.242%, 9/15/2050 (i)      11,013,754       869,505  
Loomis, Sayles & Co., CLO, “A1”, FLR, 2.834%, (U.S. LIBOR-3mo. + 1.53%) 10/15/2027 (n)      523,217       525,573  
Madison Park Funding XIV Ltd., 2014-14A, “C1R”, FLR, 3.357%, (U.S. LIBOR-3mo. + 2.05%) 7/20/2026 (n)      791,000       790,985  

 

1


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Bonds - continued  
Asset-Backed & Securitized - continued  
Magnetite XI Ltd., 2014-11A, “BR”, FLR, 3.404%, (U.S. LIBOR-3mo. + 2.1%) 1/18/2027 (n)    $ 393,000     $ 392,993  
Morgan Stanley Bank of America Merrill Lynch Trust, 2017-C33, “XA”, 1.609%, 5/15/2050 (i)      5,788,984       544,302  
Morgan Stanley Capital I Trust, 2017-H1, “XA”, 1.621%, 6/15/2050 (i)      2,231,584       222,207  
Motor PLC, 2015-1A, “A1”, FLR, 1.834%, (U.S. LIBOR-1mo. + 0.6%) 6/25/2022 (n)      129,783       129,792  
Mountain Hawk CLO Ltd., 2014-3A, “BR”, FLR, 3.104%, (U.S. LIBOR-3mo. + 1.8%) 4/18/2025 (n)      1,132,000       1,131,982  
Nationstar HECM Loan Trust, 2016-2A, “A”, 2.239%, 6/25/2026 (n)      76,717       77,223  
Navient Student Loan Trust, 2016-3A, “A1”, FLR, 1.834%, (U.S. LIBOR-1mo. + 0.6%) 6/25/2065 (n)      192,711       193,223  
Navient Student Loan Trust, 2016-AA, “A1”, FLR, 2.334%, (U.S. LIBOR-1mo. + 1.1%) 12/15/2025 (n)      38,411       38,444  
Nextgear Floorplan Master Owner Trust, 2017-1A, “A2”, 2.54%, 4/18/2022 (n)      451,000       453,809  
Oaktree CLO Ltd., 2014-2A, “BR”, FLR, 3.857%, (U.S. LIBOR-3mo. + 2.55%) 10/20/2026 (n)      573,000       574,517  
OneMain Direct Auto Receivables Trust, 2016-1A, “A”, 2.04%, 1/15/2021 (n)      116,200       116,276  
OneMain Financial Issuance Trust, 2017-1A, “A1”, 2.37%, 9/14/2032 (z)      697,000       696,922  
Oscar U.S. Funding Trust, 2016-2A, “A”, 2.31%, 11/15/2019 (n)      190,614       190,708  
Oscar U.S. Funding Trust, 2017-1A, “A3”, 2.82%, 6/10/2021 (z)      510,000       514,159  
Santander Drive Auto Receivables Trust, 2017-2, “C”, 2.79%, 8/15/2022      366,000       368,882  
Securitized Term Auto Receivables Trust, 2016-1A, “A2A”, 1.284%, 11/26/2018 (n)      204,802       204,667  
Shackelton CLO Ltd., 2013-4A, “CR”, FLR, 3.404%, (U.S. LIBOR-3mo. + 2.1%) 1/13/2025 (n)      280,000       280,532  
Sierra Receivables Funding Co. LLC, 2015-1A, “A”, 2.4%, 3/22/2032 (n)      189,613       189,763  
Silver Spring CLO Ltd., FLR, 4.054%, (LIBOR-3mo. + 2.75%) 10/15/2026 (n)      458,000       456,782  
SPS Servicer Advance Receivables Trust, 2016-T1, “AT1”, 2.53%, 11/16/2048 (n)      1,000,000       992,787  
Thacher Park CLO Ltd. 2014-1A. “CR”, FLR, 3.507%, (U.S. LIBOR-3mo. + 2.2%) 10/20/2026 (n)      570,000       570,067  
TICP CLO Ltd., FLR, 3.557%, (U.S. LIBOR-3mo. + 2.25%) 1/20/2027 (z)      502,000       504,710  
Tricon American Homes 2015-SFR1, Trust “1A”, FLR, 2.478%, (LIBOR-1mo. + 1.25%) 5/17/2032 (n)      285,332       287,242  
Tricon American Homes 2015-SFR1, Trust “1A”, 2.589%, 11/17/2033 (n)      650,000       652,085  
Verizon Owner Trust, 2016-1A, “A”, 1.42%, 1/20/2021 (n)      983,000       979,950  
Volvo Financial Equipment LLC, “A2”, 1.44%, 10/15/2018 (n)      163,110       163,103  
West CLO Ltd., 2013-1A, “A2BR”, 3.393%, 11/07/2025 (z)      564,000       566,512  
Wheels SPV LLC, 2015-1A, “A2”, 1.27%, 4/22/2024 (n)      270,497       270,247  
World Financial Network Credit Card Master Trust, 2017-B, “A”, 1.98%, 6/15/2023      888,000       889,148  
    

 

 

 
             $ 40,811,537  
Automotive - 4.6%                 
American Honda Finance Corp., 1.6%, 7/13/2018    $ 800,000     $ 800,730  
American Honda Finance Corp., FLR, 1.724%, (U.S. LIBOR-3mo. + 0.45%) 9/20/2017      470,000       470,101  
Daimler Finance North America LLC, 1.65%, 5/18/2018 (n)      1,100,000       1,100,135  
Ford Motor Credit Co. LLC, 2.262%, 3/28/2019      840,000       844,187  
Ford Motor Credit Co. LLC, 2.021%, 5/03/2019      810,000       809,675  
Ford Motor Credit Co. LLC, FLR, 2.244%, (U.S. LIBOR-3mo. + 0.94%) 1/09/2018      280,000       280,637  
General Motors Financial Co., Inc., 2.65%, 4/13/2020      1,753,000       1,767,480  
General Motors Financial Co., Inc., 3.15%, 6/30/2022      397,000       398,964  
Hyundai Capital America, 2%, 3/19/2018 (n)      875,000       875,644  
Hyundai Capital America, 2.4%, 10/30/2018 (n)      480,000       480,798  
Toyota Motor Credit Corp., 1.7%, 2/19/2019      620,000       620,998  
Toyota Motor Credit Corp., FLR, 1.694%, (U.S. LIBOR-3mo. + 0.39%) 1/17/2019      850,000       853,384  
    

 

 

 
             $ 9,302,733  
Banks & Diversified Financials (Covered Bonds) - 0.3%                 
Credit Mutuel-CIC Home Loan, 1.5%, 11/16/2017 (n)    $ 600,000     $ 599,893  
Broadcasting - 0.1%                 
SES Global Americas Holdings GP, 2.5%, 3/25/2019 (n)    $ 203,000     $ 203,389  
Brokerage & Asset Managers - 0.5%                 
Intercontinental Exchange, Inc., 2.75%, 12/01/2020    $ 680,000     $ 691,971  
NYSE Euronext, 2%, 10/05/2017      412,000       412,206  
    

 

 

 
             $ 1,104,177  

 

2


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Bonds - continued  
Building - 0.3%                 
Stanley Black & Decker, Inc., 1.622%, 11/17/2018    $ 560,000     $ 559,290  
Business Services - 0.4%                 
Fidelity National Information Services, Inc., 2.85%, 10/15/2018    $ 230,000     $ 232,768  
Fidelity National Information Services, Inc., 2.25%, 8/15/2021      590,000       589,260  
    

 

 

 
             $ 822,028  
Cable TV - 0.6%                 
Time Warner Cable, Inc., 5%, 2/01/2020    $ 1,146,000     $ 1,216,984  
Chemicals - 2.0%                 
CF Industries, Inc., 6.875%, 5/01/2018    $ 846,000     $ 871,380  
Chevron Phillips Chemical Co. LLC, 1.7%, 5/01/2018 (n)      1,000,000       1,000,839  
Dow Chemical Co., 8.55%, 5/15/2019      840,000       931,911  
LyondellBasell Industries N.V., 5%, 4/15/2019      425,000       442,414  
Sherwin-Williams Co., 2.25%, 5/15/2020      805,000       808,933  
    

 

 

 
             $ 4,055,477  
Computer Software - 0.3%                 
Diamond 1 Finance Corp./Diamond 2 Finance Corp., 3.48%, 6/01/2019 (n)    $ 520,000     $ 531,443  
Conglomerates - 0.3%                 
Roper Industries, Inc., 1.85%, 11/15/2017    $ 382,000     $ 382,119  
Roper Technologies, Inc., 2.8%, 12/15/2021      240,000       243,170  
    

 

 

 
             $ 625,289  
Consumer Products - 1.7%                 
Mattel, Inc., 1.7%, 3/15/2018    $ 139,000     $ 138,978  
Newell Brands, Inc., 2.6%, 3/29/2019      64,000       64,695  
Newell Rubbermaid, Inc., 2.05%, 12/01/2017      236,000       236,245  
Newell Rubbermaid, Inc., 2.875%, 12/01/2019      680,000       692,487  
Reckitt Benckiser PLC, 2.125%, 9/21/2018 (n)      910,000       914,258  
Reckitt Benckiser Treasury Services PLC, 2.375%, 6/24/2022 (n)      1,433,000       1,433,769  
    

 

 

 
             $ 3,480,432  
Electrical Equipment - 0.6%                 
Amphenol Corp., 1.55%, 9/15/2017    $ 450,000     $ 449,999  
Arrow Electronics, Inc., 3%, 3/01/2018      141,000       141,826  
Molex Electronic Technologies LLC, 2.878%, 4/15/2020 (n)      593,000       599,415  
    

 

 

 
             $ 1,191,240  
Electronics - 0.3%                 
Tyco Electronics Group S.A., 2.375%, 12/17/2018    $ 155,000     $ 155,896  
Xilinx, Inc., 2.125%, 3/15/2019      480,000       481,519  
    

 

 

 
             $ 637,415  
Emerging Market Quasi-Sovereign - 0.6%                 
Corporacion Financiera de Desarrollo S.A., 3.25%, 7/15/2019 (n)    $ 548,000     $ 558,275  
State Grid International Development Co. Ltd., 1.75%, 5/22/2018 (n)      627,000       625,882  
    

 

 

 
             $ 1,184,157  
Emerging Market Sovereign - 0.3%                 
State of Qatar, 2.375%, 6/02/2021 (n)    $ 540,000     $ 534,676  

 

3


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Bonds - continued  
Energy - Integrated - 0.6%                 
BP Capital Markets PLC, 2.521%, 1/15/2020    $ 403,000     $ 410,058  
Shell International Finance B.V., 1.375%, 5/10/2019      830,000       827,385  
    

 

 

 
             $ 1,237,443  
Financial Institutions - 0.3%                 
LeasePlan Corp. N.V., 3%, 10/23/2017 (n)    $ 340,000     $ 340,471  
LeasePlan Corp. N.V., 2.5%, 5/16/2018 (n)      200,000       200,532  
    

 

 

 
             $ 541,003  
Food & Beverages - 3.5%                 
Anheuser-Busch InBev Finance, Inc., 1.9%, 2/01/2019    $ 1,487,000     $ 1,490,622  
Anheuser-Busch InBev Finance, Inc., 2.15%, 2/01/2019      675,000       679,492  
Anheuser-Busch InBev Finance, Inc., 2.65%, 2/01/2021      708,000       722,385  
General Mills, Inc., 1.4%, 10/20/2017      1,000,000       999,930  
Ingredion, Inc., 1.8%, 9/25/2017      167,000       167,003  
J.M. Smucker Co., 1.75%, 3/15/2018      250,000       250,085  
Kraft Heinz Foods Co., 6.125%, 8/23/2018      900,000       937,099  
Mondelez International, Inc., FLR, 1.924%, (U.S. LIBOR-3mo. + 0.61%) 10/28/2019 (n)      1,010,000       1,013,930  
Pernod Ricard S.A., 5.75%, 4/07/2021 (n)      260,000       290,188  
Want Want China Finance Co., 1.875%, 5/14/2018 (n)      607,000       605,860  
Wm. Wrigley Jr. Co., 2.4%, 10/21/2018 (n)      52,000       52,372  
    

 

 

 
             $ 7,208,966  
Food & Drug Stores - 0.6%                 
CVS Health Corp., 1.9%, 7/20/2018    $ 800,000     $ 802,135  
CVS Health Corp., 2.8%, 7/20/2020      490,000       500,527  
    

 

 

 
             $ 1,302,662  
Insurance - 1.5%                 
American International Group, Inc., 2.3%, 7/16/2019    $ 180,000     $ 181,353  
American International Group, Inc., 3.3%, 3/01/2021      860,000       890,036  
Metropolitan Life Global Funding I, 2%, 4/14/2020 (n)      900,000       902,169  
Metropolitan Life Global Funding I, FLR, 1.697%, (U.S. LIBOR-3mo. + 0.43%) 12/19/2018 (n)      1,000,000       1,003,870  
Voya Financial, Inc., 2.9%, 2/15/2018      82,000       82,481  
    

 

 

 
             $ 3,059,909  
Insurance - Health - 0.0%  
Aetna, Inc., 1.5%, 11/15/2017    $ 94,000     $ 93,998  
Insurance - Property & Casualty - 0.3%                 
Marsh & McLennan Cos., Inc., 2.35%, 9/10/2019    $ 600,000     $ 605,944  
International Market Quasi-Sovereign - 3.8%                 
Bank Nederlandse Gemeenten N.V., 1.375%, 3/19/2018 (n)    $ 650,000     $ 649,999  
Caisse d’Amortissement de la Dette Sociale, 1.875%, 1/13/2020 (n)      670,000       673,139  
CPPIB Capital, Inc., 1.25%, 9/20/2019 (n)      1,060,000       1,049,898  
Dexia Credit Local S.A., 1.875%, 9/15/2021 (n)      1,090,000       1,074,644  
Dexia Credit Local S.A., 2.25%, 1/30/2019 (n)      310,000       312,139  
Dexia Credit Local, “A”, 2.25%, 2/18/2020 (n)      340,000       342,157  
Electricite de France, 2.15%, 1/22/2019 (n)      650,000       653,055  
Kommunalbanken A.S., 1.375%, 10/26/2020 (n)      630,000       623,463  
Kommunalbanken A.S., 1%, 3/15/2018 (n)      190,000       189,677  
Nederlandse Waterschapsbank N.V., 1.5%, 4/16/2018 (n)      790,000       790,585  
Swedish Export Credit Corp., 1.125%, 8/28/2019      1,470,000       1,456,403  
    

 

 

 
             $ 7,815,159  

 

4


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Bonds - continued  
Internet - 0.2%                 
Baidu, Inc., 2.75%, 6/09/2019    $ 328,000     $ 330,921  
Local Authorities - 1.1%                 
Kommuninvest i Sverige AB, 1.125%, 9/17/2019 (n)    $ 1,292,000     $ 1,279,584  
Province of Ontario, 1.1%, 10/25/2017      900,000       899,746  
    

 

 

 
             $ 2,179,330  
Machinery & Tools - 0.8%                 
John Deere Capital Corp., 1.6%, 7/13/2018    $ 1,550,000     $ 1,551,666  
Major Banks - 12.7%                 
ABN AMRO Bank N.V., 2.1%, 1/18/2019 (n)    $ 460,000     $ 462,227  
ABN AMRO Bank N.V., 1.8%, 6/04/2018 (n)      600,000       599,907  
Bank of America Corp., 2.369% to 7/21/2020, FLR to 7/21/2021      1,306,000       1,309,512  
Bank of America Corp., 2.881% to 4/24/2022, FLR to 4/24/2023      1,000,000       1,009,203  
Bank of Montreal, 1.45%, 4/09/2018      1,700,000       1,700,076  
Barclays PLC, 3.25%, 1/12/2021      1,450,000       1,481,848  
BNP Paribas, 2.7%, 8/20/2018      580,000       585,980  
Commonwealth Bank of Australia, 2.3%, 9/06/2019      843,000       850,401  
Commonwealth Bank of Australia, FLR, 1.489%, (U.S. LIBOR-3mo. + 0.27%) 9/08/2017 (n)      500,000       500,005  
Credit Agricole, “A”, FLR, 2.734%, (U.S. LIBOR-3mo. + 1.43%) 1/10/2022 (n)      410,000       418,569  
Credit Suisse Group AG, “A”, 3.574%, 1/09/2023 (n)      690,000       709,758  
HSBC Holdings PLC, 3.262% to 3/13/2022, FLR to 3/13/2023      576,000       591,090  
ING Bank N.V., 1.8%, 3/16/2018 (n)      1,500,000       1,501,975  
Mitsubishi UFJ Financial Group, Inc., 2.95%, 3/01/2021      400,000       408,718  
Mitsubishi UFJ Financial Group, Inc., 2.998%, 2/22/2022      415,000       424,518  
Mizuho Bank Ltd., FLR, 2.497%, (U.S. LIBOR-3mo. + 1.19%) 10/20/2018 (n)      260,000       262,714  
Morgan Stanley, 2.375%, 7/23/2019      1,000,000       1,007,713  
Morgan Stanley, 2.65%, 1/27/2020      1,100,000       1,117,373  
PNC Bank N.A., 1.5%, 10/18/2017      660,000       659,970  
PNC Bank N.A., 1.6%, 6/01/2018      620,000       620,468  
PNC Bank N.A., 2.25%, 7/02/2019      650,000       655,441  
Skandinaviska Enskilda, 1.75%, 3/19/2018 (n)      271,000       271,225  
Skandinaviska Enskilda Banken AB, 2.45%, 5/27/2020 (n)      790,000       799,028  
Sumitomo Mitsui Banking Corp., FLR, 1.976%, (U.S. LIBOR-3mo. + 0.67%) 10/19/2018      880,000       884,342  
Svenska Handelsbanken AB, 2.25%, 6/17/2019      842,000       848,680  
Swedbank AB, 2.125%, 9/29/2017 (n)      1,461,000       1,461,808  
Toronto-Dominion Bank, 1.75%, 7/23/2018      1,000,000       1,001,797  
Toronto-Dominion Bank, 1.45%, 9/06/2018      1,200,000       1,198,802  
UBS Group Funding (Jersey) Ltd., 3%, 4/15/2021 (n)      1,000,000       1,017,511  
UBS Group Funding (Switzerland) AG, 3.491%, 5/23/2023 (n)      1,148,000       1,181,291  
Westpac Banking Corp., 1.55%, 5/25/2018      420,000       420,105  
    

 

 

 
             $ 25,962,055  
Medical & Health Technology & Services - 1.3%                 
Becton, Dickinson and Co., 2.675%, 12/15/2019    $ 842,000     $ 854,063  
Becton, Dickinson and Co., 2.404%, 6/05/2020      377,000       379,032  
Becton, Dickinson and Co., 2.894%, 6/06/2022      452,000       453,983  
Catholic Health Initiatives, 1.6%, 11/01/2017      250,000       249,999  
Covidien International Finance S.A., 6%, 10/15/2017      231,000       232,120  
Laboratory Corp. of America Holdings, 2.625%, 2/01/2020      400,000       404,936  
    

 

 

 
             $ 2,574,133  
Medical Equipment - 1.2%                 
Abbott Laboratories, 2.35%, 11/22/2019    $ 850,000     $ 857,484  
Abbott Laboratories, 2.9%, 11/30/2021      680,000       691,726  

 

5


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Bonds - continued  
Medical Equipment - continued  
Medtronic, Inc., 1.5%, 3/15/2018    $ 190,000     $ 189,996  
Zimmer Holdings, Inc., 2%, 4/01/2018      750,000       751,035  
    

 

 

 
             $ 2,490,241  
Metals & Mining - 0.3%                 
Freeport-McMoRan, Inc., 2.375%, 3/15/2018    $ 270,000     $ 270,000  
Glencore Funding LLC, 2.125%, 4/16/2018 (n)      420,000       420,290  
    

 

 

 
             $ 690,290  
Midstream - 1.7%                 
EL Paso LLC, 6.5%, 9/15/2020    $ 858,000     $ 956,495  
Enbridge, Inc., 2.9%, 7/15/2022      565,000       568,638  
Energy Transfer Partners LP, 2.5%, 6/15/2018      280,000       281,335  
EnLink Midstream Partners LP, 2.7%, 4/01/2019      236,000       236,325  
Enterprise Products Operating LP, 6.5%, 1/31/2019      400,000       424,905  
Kinder Morgan (Delaware), Inc., 2%, 12/01/2017      340,000       340,182  
ONEOK Partners LP, 3.2%, 9/15/2018      450,000       455,171  
TransCanada PipeLines Ltd., 1.875%, 1/12/2018      195,000       195,077  
    

 

 

 
             $ 3,458,128  
Mortgage-Backed - 0.5%                 
Fannie Mae, 4%, 12/01/2025    $ 324,130     $ 339,208  
Fannie Mae, 3%, 12/01/2031      636,741       658,408  
Fannie Mae, FLR, 1.514% (LIBOR-1mo. + 0.29%), 12/25/2017      33,547       33,525  
Fannie Mae, FLR, 1.511% (LIBOR-1mo. + 0.25%), 5/25/2018      58,705       58,703  
Freddie Mac, 0%, 2/15/2036 (i)      99,974       4,863  
    

 

 

 
             $ 1,094,707  
Natural Gas - Distribution - 0.3%                 
Engie, 1.625%, 10/10/2017 (n)    $ 550,000     $ 549,991  
Network & Telecom - 2.3%                 
AT&T, Inc., 2.3%, 3/11/2019    $ 560,000     $ 563,595  
AT&T, Inc., 2.45%, 6/30/2020      1,190,000       1,200,167  
AT&T, Inc., 2.85%, 2/14/2023      405,000       403,900  
AT&T, Inc., FLR, 2.227%, (U.S. LIBOR-3mo. + 0.91%) 11/27/2018      780,000       786,214  
British Telecommunications PLC, 2.35%, 2/14/2019      580,000       583,973  
Verizon Communications, Inc., 4.5%, 9/15/2020      1,036,000       1,111,318  
    

 

 

 
             $ 4,649,167  
Oil Services - 0.4%                 
Schlumberger Holdings Corp., 1.9%, 12/21/2017 (n)    $ 750,000     $ 750,490  
Oils - 0.5%                 
Marathon Petroleum Corp., 2.7%, 12/14/2018    $ 1,068,000     $ 1,077,269  
Other Banks & Diversified Financials - 6.7%                 
Banque Federative du Credit Mutuel, 2.2%, 7/20/2020 (n)    $ 866,000     $ 867,822  
BNZ International Funding Ltd. London, 1.9%, 2/26/2018 (n)      1,300,000       1,301,923  
BPCE S.A., 1.625%, 1/26/2018      660,000       659,890  
Branch Banking & Trust Co., 1.45%, 5/10/2019      1,200,000       1,195,272  
Capital One Financial Corp., 2.5%, 5/12/2020      563,000       568,147  
Citizens Bank N.A., 2.3%, 12/03/2018      750,000       753,779  
Citizens Bank N.A., 2.25%, 3/02/2020      460,000       462,006  
Citizens Bank N.A., 2.55%, 5/13/2021      250,000       252,168  
Compass Bank, 2.875%, 6/29/2022      893,000       896,457  

 

6


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Bonds - continued  
Other Banks & Diversified Financials - continued  
Discover Bank, 3.1%, 6/04/2020    $ 424,000     $ 434,419  
Fifth Third Bancorp, 2.3%, 3/01/2019      200,000       201,464  
First Republic Bank, 2.375%, 6/17/2019      250,000       251,140  
Groupe BPCE S.A., 2.5%, 12/10/2018      500,000       504,682  
Lloyds Bank PLC, 1.75%, 5/14/2018      1,200,000       1,201,859  
Lloyds Bank PLC, 2.3%, 11/27/2018      200,000       201,855  
National Australia Bank Ltd., 1.375%, 7/12/2019      610,000       605,918  
National Bank of Canada, FLR, 2.159%, (U.S. LIBOR-3mo. + 0.84%) 12/14/2018      1,600,000       1,609,339  
Santander UK Group Holdings PLC, 2.875%, 8/05/2021      760,000       765,876  
Santander UK PLC, 3.05%, 8/23/2018      238,000       241,191  
SunTrust Banks, Inc., 2.7%, 1/27/2022      675,000       683,036  
    

 

 

 
             $ 13,658,243  
Personal Computers & Peripherals - 0.1%                 
Equifax, Inc., 2.3%, 6/01/2021    $ 204,000     $ 204,683  
Pharmaceuticals - 4.2%                 
AbbVie, Inc., 1.8%, 5/14/2018    $ 1,000,000     $ 1,001,024  
Actavis Funding SCS, 2.35%, 3/12/2018      568,000       569,846  
Actavis Funding SCS, 3%, 3/12/2020      515,000       525,542  
Amgen, Inc., 2.2%, 5/11/2020      1,126,000       1,133,849  
Bayer U.S. Finance LLC, 1.5%, 10/06/2017 (n)      900,000       899,966  
Biogen, Inc., 2.9%, 9/15/2020      500,000       511,711  
Celgene Corp., 2.125%, 8/15/2018      670,000       672,954  
EMD Finance LLC, 1.7%, 3/19/2018 (n)      1,000,000       1,001,432  
Gilead Sciences, Inc., 1.85%, 9/04/2018      700,000       702,971  
Shire Acquisitions Investments Ireland Designated Activity Co., 1.9%, 9/23/2019      1,460,000       1,456,060  
    

 

 

 
             $ 8,475,355  
Real Estate - Healthcare - 0.1%                 
Welltower, Inc., REIT, 2.25%, 3/15/2018    $ 150,000     $ 150,256  
Real Estate - Office - 0.3%                 
Mack-Cali Realty LP, 2.5%, 12/15/2017    $ 200,000     $ 200,220  
Vornado Realty LP, REIT, 2.5%, 6/30/2019      325,000       328,063  
    

 

 

 
             $ 528,283  
Real Estate - Retail - 0.2%                 
Simon Property Group, Inc., REIT, 1.5%, 2/01/2018 (n)    $ 167,000     $ 166,985  
WEA Finance LLC/Westfield Co., REIT, 1.75%, 9/15/2017 (n)      350,000       350,007  
    

 

 

 
             $ 516,992  
Restaurants - 0.2%                 
McDonald’s Corp., 2.1%, 12/07/2018    $ 410,000     $ 412,656  
Retailers - 0.2%                 
Dollar General Corp., 1.875%, 4/15/2018    $ 90,000     $ 90,118  
Wesfarmers Ltd., 1.874%, 3/20/2018 (n)      233,000       233,319  
    

 

 

 
             $ 323,437  
Specialty Chemicals - 0.2%                 
Airgas, Inc., 3.05%, 8/01/2020    $ 330,000     $ 338,862  

 

7


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Bonds - continued  
Supranational - 0.4%                 
Corporacion Andina de Fomento, FLR, 1.861%, (U.S. LIBOR-3mo. + 0.55%) 1/29/2018    $ 50,000     $ 50,010  
Corporacion Andina de Fomento, 2%, 5/10/2019      820,000       821,789  
    

 

 

 
             $ 871,799  
Telecommunications - Wireless - 0.8%                 
American Tower Corp., 2.8%, 6/01/2020    $ 280,000     $ 285,228  
American Tower Trust I, REIT, 1.551%, 3/15/2018 (n)      500,000       499,297  
SBA Tower Trust, 2.898%, 10/15/2044 (n)      473,000       475,549  
SBA Tower Trust, 2.877%, 7/10/2046 (n)      305,000       309,014  
    

 

 

 
             $ 1,569,088  
Tobacco - 1.7%                 
BAT Capital Corp., 2.297%, 8/14/2020 (z)    $ 990,000     $ 994,509  
Imperial Tobacco Finance PLC, 2.05%, 7/20/2018 (n)      680,000       680,273  
Imperial Tobacco Finance PLC, 2.95%, 7/21/2020 (n)      1,106,000       1,126,366  
Reynolds American, Inc., 2.3%, 6/12/2018      580,000       582,292  
    

 

 

 
             $ 3,383,440  
Transportation - Services - 0.4%                 
TTX Co., 2.6%, 6/15/2020 (n)    $ 840,000     $ 845,976  
U.S. Government Agencies and Equivalents - 0.3%                 
Hashemite Kingdom of Jordan, 1.945%, 6/23/2019    $ 430,000     $ 433,557  
Small Business Administration, 2.25%, 7/01/2021      185,481       187,808  
    

 

 

 
             $ 621,365  
U.S. Treasury Obligations - 6.4%                 
U.S. Treasury Notes, 1.875%, 2/28/2022 (f)    $ 11,000,000     $ 11,098,828  
U.S. Treasury Notes, 1.75%, 9/30/2019      2,000,000       2,016,484  
    

 

 

 
             $ 13,115,312  
Utilities - Electric Power - 4.8%                 
American Electric Power Co., Inc., 1.65%, 12/15/2017    $ 220,000     $ 220,027  
Dominion Energy, Inc., 2.579%, 7/01/2020      539,000       544,157  
Dominion Resources, Inc., 2.962%, 7/01/2019      410,000       416,334  
Dominion Resources, Inc., 2.5%, 12/01/2019      650,000       657,615  
Emera U.S. Finance LP, 2.15%, 6/15/2019      645,000       645,951  
Enel Finance International S.A., 6.25%, 9/15/2017 (n)      410,000       410,472  
Eversource Energy, 1.6%, 1/15/2018      600,000       599,551  
Eversource Energy, 2.5%, 3/15/2021      500,000       503,844  
FirstEnergy Corp., 2.85%, 7/15/2022      282,000       282,946  
NextEra Energy Capital Holdings, Inc., 2.056%, 9/01/2017      1,934,000       1,934,000  
PG&E Corp., 2.4%, 3/01/2019      364,000       366,508  
Southern Co., 2.45%, 9/01/2018      50,000       50,341  
Southern Co., 1.85%, 7/01/2019      1,150,000       1,150,951  
Southern Power Co., 1.85%, 12/01/2017      960,000       960,375  
Virginia Electric & Power Co., 1.2%, 1/15/2018      410,000       409,477  
Xcel Energy, Inc., 2.4%, 3/15/2021      590,000       595,379  
    

 

 

 
             $ 9,747,928  
Total Bonds            $ 190,847,307  
Short-Term Obligations (y) - 1.9%                 
Bank of Nova Scotia, 1.44%, 9/01/2017    $ 2,620,000     $ 2,620,018  
Credit Agricole, 1.43%, 9/01/2017      1,190,000       1,190,008  
Total Short-Term Obligations            $ 3,810,026  

 

8


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Investment Companies (h) - 4.1%                 
Money Market Funds - 4.1%                 
MFS Institutional Money Market Portfolio, 1.11% (v)      8,362,572     $ 8,362,572  
Other Assets, Less Liabilities - 0.2%              462,030  
Net Assets - 100.0%            $ 203,481,935  

 

(f) All or a portion of the security has been segregated as collateral for open futures contracts.
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund’s investments in affiliated issuers and in unaffiliated issuers were $8,362,572 and $194,657,333, respectively.
(i) Interest only security for which the fund receives interest on notional principal (Par amount). Par amount shown is the notional principal and does not reflect the cost of the security.
(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to qualified institutional buyers. At period end, the aggregate value of these securities was $72,478,585, representing 35.6% of net assets.
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.
(y) The rate shown represents an annualized yield at time of purchase.
(z) Restricted securities are not registered under the Securities Act of 1933 and are subject to legal restrictions on resale. These securities generally may be resold in transactions exempt from registration or to the public if the securities are subsequently registered. Disposal of these securities may involve time-consuming negotiations and prompt sale at an acceptable price may be difficult. The fund holds the following restricted securities:

 

Restricted Securities    Acquisition
Date
    
Cost
     Value  
BAT Capital Corp., 2.297%, 8/14/2020      8/08/17        $990,000        $994,509  
Chesapeake Funding II LLC, 2017-3A, “B”, 2.57%, 8/15/2029      8/01/17        255,965        256,716  
DT Auto Owner Trust, 2017-3A, “C”, 3.01%, 5/15/2023      8/08/17        430,955        431,692  
OneMain Financial Issuance Trust, 2017-1A, “A1”, 2.37%, 9/14/2032      8/29/17        696,922        696,922  
Oscar U.S. Funding Trust, 2017-1A, “A3”, 2.82%, 6/10/2021      3/15/17        509,917        514,159  
TICP CLO Ltd., FLR, 3.557%, (U.S. LIBOR-3mo. + 2.25%) 1/20/2027      3/20/17        502,000        504,710  
West CLO Ltd., 2013-1A, “A2BR”, 3.393%, 11/07/2025      4/28/17        564,000        566,512  
Total Restricted Securities            $3,965,220  
% of Net assets            1.9%  

The following abbreviations are used in this report and are defined:

 

CDO   Collateralized Debt Obligation
CLO   Collateralized Loan Obligation
FLR   Floating rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate reported may not be the current rate.
PLC   Public Limited Company
REIT   Real Estate Investment Trust

Abbreviations indicate amounts shown in currencies other than the U.S. dollar. All amounts are stated in U.S. dollars unless otherwise indicated. A list of abbreviations is shown below:

 

AUD   Australian Dollar
BRL   Brazilian Real
CAD   Canadian Dollar
CHF   Swiss Franc
EUR   Euro
GBP   British Pound
HKD   Hong Kong Dollar
JPY   Japanese Yen
KRW   Korean Won
MXN   Mexican Peso
NOK   Norwegian Krone

 

9


Portfolio of Investments (unaudited) – continued

 

NZD   New Zealand Dollar
SEK   Swedish Krona
SGD   Singapore Dollar
TRY   Turkish Lira
ZAR   South African Rand

Derivative Contracts at 8/31/17

Forward Foreign Currency Exchange Contracts at 8/31/17

 

     Currency Purchased      Currency Sold    Counterparty    Settlement
Date
     Unrealized
Appreciation
 
Asset Derivatives         
    AUD        9,354,086      USD    7,354,940    JPMorgan Chase Bank      11/15/2017        $74,385  
    CAD        7,856,437      USD    6,188,528    JPMorgan Chase Bank      11/15/2017        107,278  
    CHF        513,890      USD    535,922    Goldman Sachs International      11/15/2017        2,467  
    GBP        3,600,366      USD    4,664,000    JPMorgan Chase Bank      11/15/2017        2,716  
    JPY        147,503,302      USD    1,343,000    JPMorgan Chase Bank      11/15/2017        3,220  
    NOK        35,136,322      USD    4,418,718    Goldman Sachs International      11/15/2017        117,181  
    NOK        53,466,059      USD    6,800,986    JPMorgan Chase Bank      11/15/2017        101,179  
    SEK        37,434,270      USD    4,699,888    Goldman Sachs International      11/15/2017        30,443  
    USD        130,000      EUR    108,663    Goldman Sachs International      11/15/2017        145  
    USD        8,123,000      NZD    11,287,526    Goldman Sachs International      11/15/2017        29,561  
    USD        2,503,563      GBP    1,919,759    JPMorgan Chase Bank      11/15/2017        15,213  
                   

 

 

 
                      $483,788  
                   

 

 

 
Liability Derivatives         
    JPY        808,493,760      USD    7,395,763    JPMorgan Chase Bank      11/15/2017        $(16,872
    NZD        972,913      USD    706,087    Goldman Sachs International      11/15/2017        (8,484
    USD        208,000      CHF    198,571    Goldman Sachs International      11/15/2017        (37
    USD        3,939,484      EUR    3,337,629    Goldman Sachs International      11/15/2017        (49,068
    USD        5,353,000      AUD    6,779,571    JPMorgan Chase Bank      11/15/2017        (31,560
    USD        12,622,015      CHF    12,105,863    JPMorgan Chase Bank      11/15/2017        (60,971
    USD        1,671,430      EUR    1,415,827    JPMorgan Chase Bank      11/15/2017        (20,519
                   

 

 

 
                      $(187,511
                   

 

 

 

Futures Contracts at 8/31/17

 

Description   Long/Short      Currency      Contracts      Notional
Amount
     Expiration Date      Value/Unrealized
Appreciation
(Depreciation)
 
Asset Derivatives                 
Equity Futures                 
AEX 25 Index     Short        EUR        23        $2,824,557        September - 2017        $26,474  
ASX SPI 200 Index     Short        AUD        75        8,478,141        September - 2017        12,322  
BIST 30 Index     Long        TRY        1,936        7,723,315        October - 2017        21,402  
Bovespa Index     Short        BRL        206        4,676,449        October - 2017        17,116  
FTSE 100 Index     Long        GBP        96        9,226,527        September - 2017        17,065  
FTSE MIB Index     Long        EUR        64        8,252,390        September - 2017        233,212  
Hang Seng China ENT Index     Short        HKD        79        5,689,474        September - 2017        35,166  
Hang Seng Index     Long        HKD        44        7,853,739        September - 2017        32,900  
Mexican Bolsa Index     Short        MXN        7        200,695        September - 2017        263  
MSCI Singapore Index     Long        SGD        306        8,242,671        September - 2017        57,735  
MSCI Taiwan Index     Long        USD        193        7,646,660        September - 2017        11,404  
Russell 2000 Index     Short        USD        124        8,707,280        September - 2017        106,372  
S&P TSX 60 Index     Short        CAD        60        8,562,162        September - 2017        140,134  
Topix Index     Long        JPY        8        1,179,606        September - 2017        13,746  
                

 

 

 
                   $725,311  
                

 

 

 

 

10


Portfolio of Investments (unaudited) – continued

 

Futures Contracts at 8/31/17 - continued

 

Description   Long/Short      Currency      Contracts      Notional
Amount
     Expiration Date      Value/Unrealized
Appreciation
(Depreciation)
 
Asset Derivatives – continued                 
Interest Rate Futures                 
Euro Bund     Long        EUR        62        $12,184,208        September - 2017        $8,662  
U.S. Treasury Note 2 yr     Long        USD        92        19,900,750        December - 2017        5,425  
                

 

 

 
                   $14,087  
                

 

 

 
                   $739,398  
                

 

 

 
Equity Futures                 
CAC 40 Index     Long        EUR        74        $4,479,104        September - 2017        $(42,044
DAX Index     Long        EUR        2        718,198        September - 2017        (39,320
FTSE JSE Top 40 Index     Short        ZAR        163        6,243,838        September - 2017        (505,587
IBEX Index     Long        EUR        48        5,887,299        September - 2017        (95,068
KOSPI Index     Long        KRW        112        7,648,102        September - 2017        (93,541
NIFTY Index     Short        USD        314        6,241,064        September - 2017        (3,990
OMX Index     Short        SEK        289        5,617,601        September - 2017        (45,025
S&P 500 E-Mini Index     Short        USD        61        7,533,805        September - 2017        (92,484
                

 

 

 
                   $(917,059
                

 

 

 
Interest Rate Futures                 
Australian Treasury Bond 10 yr     Long        AUD        200        $20,454,105        September - 2017        $(220,743
Japanese Government Bond 10 yr     Short        JPY        12        16,495,566        September - 2017        (32,409
Long Gilt 10 yr     Long        GBP        32        5,267,572        December - 2017        (16,626
U.S. Treasury Note 10 yr     Short        USD        204        25,904,813        December - 2017        (54,552
U.S. Treasury Note 5 yr     Long        USD        14        1,659,000        December - 2017        (1,362
                

 

 

 
                   $(325,692
                

 

 

 
                   $(1,242,751
                

 

 

 

Swap Agreements at 8/31/17

 

Maturity Date  

Notional

Amount

     Counterparty   Cash Flows to
Receive/Frequency
  Cash Flows to
Pay/Frequency
  Value    

Net

Unamortized
Upfront

Payments/
(Receipts)

    Unrealized
Appreciation
(Depreciation)
 
Asset Derivatives        
Total Return Swap Agreements        
12/20/17     USD       20,490,000      Goldman Sachs
International
  (1)  

1.273% FLR

(3 month LIBOR)/quarterly

    $198,173       $—       $198,173  
                

 

 

 

 

(1) Fund to pay notional amount multiplied by the rate of return of the iBoxx $ Liquid High Yield Index.

At August 31, 2017, the fund had liquid securities with an aggregate value of $7,875,089 to cover any collateral or margin obligations for certain derivative contracts.

See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.

 

11


Supplemental Information

8/31/17 (unaudited)

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services – Investment Companies.

(1) Investment Valuations

Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued at valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund’s assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser’s own assumptions in determining the fair value of investments. Other

 

12


Supplemental Information (unaudited) – continued

 

financial instruments are derivative instruments not reflected in total investments, such as futures contracts, forward foreign currency exchange contracts, and swap agreements. The following is a summary of the levels used as of August 31, 2017 in valuing the fund’s assets or liabilities:

 

Financial Instruments    Level 1      Level 2      Level 3      Total  
U.S. Treasury Bonds & U.S. Government Agency & Equivalents      $—        $13,736,679        $—        $13,736,679  
Non-U.S. Sovereign Debt             10,405,790               10,405,790  
U.S. Corporate Bonds             76,307,730               76,307,730  
Residential Mortgage-Backed Securities             2,849,722               2,849,722  
Commercial Mortgage-Backed Securities             3,081,329               3,081,329  
Asset-Backed Securities (including CDOs)             35,975,192               35,975,192  
Foreign Bonds             52,300,891               52,300,891  
Mutual Funds      8,362,572                      8,362,572  
Total      $8,362,572        $194,657,333        $—        $203,019,905  
Other Financial Instruments                            
Futures Contracts - Assets      $739,398        $—        $—        $739,398  
Futures Contracts - Liabilities      (1,242,751                    (1,242,751
Swap Agreements - Assets             198,173               198,173  
Forward Foreign Currency Exchange Contracts - Assets             483,788               483,788  
Forward Foreign Currency Exchange Contracts - Liabilities             (187,511             (187,511

For further information regarding security characteristics, see the Portfolio of Investments.

(2) Portfolio Securities

The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:

 

Aggregate cost      $202,758,680  
Gross unrealized appreciation      923,225  
Gross unrealized depreciation      (662,000
Net unrealized appreciation (depreciation)      $261,225  

The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.

(3) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:

 

Affiliated Issuer            Beginning
Shares/Par
Amount
     Acquisitions
Shares/Par
Amount
     Dispositions
Shares/Par
Amount
     Ending
Shares/Par
Amount
 
MFS Institutional Money Market Portfolio         14,140,650        17,996,325        (23,774,403      8,362,572  
Affiliated Issuer    Realized
Gain (Loss)
     Change in
Unrealized
Appreciation
(Depreciation)
     Capital Gain
Distributions
     Dividend
Income
     Ending
Value
 
MFS Institutional Money Market Portfolio      $114        $(266      $—        $25,834        $8,362,572  

 

13


Supplemental Information (unaudited) – continued

 

(4) Issuer Country Weightings

Issuer country weighting percentages of portfolio holdings based on net assets, as of August 31, 2017, are as follows:

 

United States     48.1%  
United Kingdom     12.4%  
Germany     7.4%  
Australia     7.2%  
France     5.6%  
South Korea     4.4%  
Italy     4.3%  
Singapore     4.1%  
Japan     (4.9)%  
Other Countries     11.4%  

The issuer country weighting percentages include both accrued interest amounts and the equivalent exposure from any derivative holdings, if applicable.

 

14


QUARTERLY REPORT
MFS®  Aggressive Growth Allocation Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Investment Companies (h) – 100.0%
International Stock Funds – 30.0%
MFS Emerging Markets Equity Fund - Class R6     990,348 $ 34,176,900
MFS International Growth Fund - Class R6     4,233,387 135,976,412
MFS International New Discovery Fund - Class R6     2,018,837 68,014,617
MFS International Value Fund - Class R6     3,273,349 135,876,701
MFS Research International Fund - Class R6     7,497,045 135,696,511
        $ 509,741,141
Specialty Funds – 10.0%
MFS Commodity Strategy Fund - Class R6 (v)     14,452,417 $ 84,113,067
MFS Global Real Estate Fund - Class R6     5,396,747 85,268,599
        $ 169,381,666
U.S. Stock Funds – 60.0%
MFS Growth Fund - Class R6     2,433,579 $ 223,037,496
MFS Mid Cap Growth Fund - Class R6     9,944,789 171,547,599
MFS Mid Cap Value Fund - Class R6     7,394,114 168,585,801
MFS New Discovery Fund - Class R6     1,433,777 43,027,646
MFS New Discovery Value Fund - Class R6     2,880,084 42,078,026
MFS Research Fund - Class R6     3,600,521 153,454,209
MFS Value Fund - Class R6     5,624,795 219,423,263
        $ 1,021,154,040
Money Market Funds – 0.0%
MFS Institutional Money Market Portfolio, 1.11% (v)     764,918 $ 764,918
Total Investment Companies $1,701,041,765
Other Assets, Less Liabilities – (0.0)%   (440,769)
Net Assets – 100.0% $1,700,600,996
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $1,701,041,765 and $0, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
1


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, “fund” also refers to the underlying funds in which the fund-of-funds invests.
Equity securities, including restricted equity securities and equity securities held short, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities held short, for which there were no sales reported for that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service.  Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing service. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued at valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. Securities and other assets, including commodity-linked structured notes, generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other
2


Supplemental Information (unaudited) – continued
significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Mutual Funds $1,701,041,765 $— $— $1,701,041,765
For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds’ shareholder reports for further information regarding the levels used in valuing the underlying funds’ assets or liabilities.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $1,020,039,410
Gross unrealized appreciation 707,524,890
Gross unrealized depreciation (26,522,535)
Net unrealized appreciation (depreciation) $681,002,355
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be affiliated issuers:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Commodity Strategy Fund 14,005,264 447,153 14,452,417
MFS Emerging Markets Equity Fund 1,073,682 (83,334) 990,348
MFS Global Real Estate Fund 5,408,441 33,564 (45,258) 5,396,747
MFS Growth Fund 2,568,291 (134,712) 2,433,579
MFS Institutional Money Market Portfolio 1,415,557 10,293,001 (10,943,640) 764,918
MFS International Growth Fund 4,501,826 217 (268,656) 4,233,387
MFS International New Discovery Fund 2,117,575 59 (98,797) 2,018,837
MFS International Value Fund 3,409,462 904 (137,017) 3,273,349
MFS Mid Cap Growth Fund 10,449,098 13 (504,322) 9,944,789
MFS Mid Cap Value Fund 7,368,930 34,446 (9,262) 7,394,114
MFS New Discovery Fund 1,470,344 101 (36,668) 1,433,777
MFS New Discovery Value Fund 2,777,438 102,646 2,880,084
MFS Research Fund 3,723,930 105 (123,514) 3,600,521
MFS Research International Fund 7,891,190 3,745 (397,890) 7,497,045
MFS Value Fund 5,712,667 37,580 (125,452) 5,624,795
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Commodity Strategy Fund $— $1,608,805 $— $— $84,113,067
MFS Emerging Markets Equity Fund 243,861 2,353,243 34,176,900
MFS Global Real Estate Fund 4,373 2,918,737 85,268,599
MFS Growth Fund 3,421,212 5,324,917 223,037,496
MFS Institutional Money Market Portfolio 29 964 764,918
MFS International Growth Fund 1,372,112 2,868,442 135,976,412
MFS International New Discovery Fund 512,966 1,351,425 68,014,617
MFS International Value Fund 1,142,497 357,440 135,876,701
MFS Mid Cap Growth Fund 1,593,634 4,407,882 171,547,599
MFS Mid Cap Value Fund 2,504 1,842,300 168,585,801
MFS New Discovery Fund 109,144 1,431,086 43,027,646
MFS New Discovery Value Fund (318,917) 541,071 431,053 42,078,026
MFS Research Fund 775,138 4,045,192 153,454,209
3


Supplemental Information (unaudited) – continued
Affiliated Issuer − continued Realized
Gain (Loss)
  Change in
Unrealized
Appreciation
(Depreciation)
  Capital Gain
Distributions
  Dividend
Income
  Ending
Value
MFS Research International Fund $508,740   $2,896,303   $—   $—   $135,696,511
MFS Value Fund 339,328   3,735,818     943,665   219,423,263
  $10,025,538   $34,822,673   $541,071   $1,375,682   $1,701,041,765
4


QUARTERLY REPORT
MFS®  Conservative Allocation Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Investment Companies (h) – 100.0%
Bond Funds – 59.9%
MFS Emerging Markets Debt Fund - Class R6     5,831,969 $ 88,470,964
MFS Emerging Markets Debt Local Currency Fund - Class R6     8,077,241 58,963,862
MFS Global Bond Fund - Class R6     16,324,332 146,755,746
MFS Government Securities Fund - Class R6     29,669,310 293,726,170
MFS High Income Fund - Class R6     42,517,231 147,109,620
MFS Inflation-Adjusted Bond Fund - Class R6     28,186,814 293,988,473
MFS Limited Maturity Fund - Class R6     48,945,218 293,181,853
MFS Total Return Bond Fund - Class R6     40,770,258 440,726,487
        $ 1,762,923,175
International Stock Funds – 8.0%
MFS International Growth Fund - Class R6     1,831,790 $ 58,837,093
MFS International Value Fund - Class R6     1,416,719 58,808,001
MFS Research International Fund - Class R6     6,482,453 117,332,409
        $ 234,977,503
Specialty Funds – 4.0%
MFS Absolute Return Fund - Class R6     6,039,623 $ 58,523,944
MFS Commodity Strategy Fund - Class R6 (v)     5,072,978 29,524,732
MFS Global Real Estate Fund - Class R6     1,869,027 29,530,623
        $ 117,579,299
U.S. Stock Funds – 28.0%
MFS Growth Fund - Class R6     1,941,488 $ 177,937,386
MFS Mid Cap Growth Fund - Class R6     6,876,421 118,618,262
MFS Mid Cap Value Fund - Class R6     5,111,368 116,539,192
MFS New Discovery Fund - Class R6     990,252 29,717,445
MFS New Discovery Value Fund - Class R6     2,006,023 29,307,998
MFS Research Fund - Class R6     4,152,470 176,978,273
MFS Value Fund - Class R6     4,495,276 175,360,730
        $ 824,459,286
Money Market Funds – 0.1%
MFS Institutional Money Market Portfolio, 1.11% (v)     2,054,541 $ 2,054,541
Total Investment Companies $2,941,993,804
Other Assets, Less Liabilities – (0.0)%   (349,487)
Net Assets – 100.0% $2,941,644,317
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $2,941,993,804 and $0, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
1


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, “fund” also refers to the underlying funds in which the fund-of-funds invests.
Equity securities, including restricted equity securities and equity securities held short, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities held short, for which there were no sales reported for that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service.  Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing service. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued at valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. Securities and other assets, including commodity-linked structured notes, generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other
2


Supplemental Information (unaudited) – continued
significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Mutual Funds $2,941,993,804 $— $— $2,941,993,804
For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds’ shareholder reports for further information regarding the levels used in valuing the underlying funds’ assets or liabilities.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $2,391,122,605
Gross unrealized appreciation 566,236,795
Gross unrealized depreciation (15,365,596)
Net unrealized appreciation (depreciation) $550,871,199
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be affiliated issuers:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Absolute Return Fund 6,152,193 36,058 (148,628) 6,039,623
MFS Commodity Strategy Fund 4,987,570 214,673 (129,265) 5,072,978
MFS Emerging Markets Debt Fund 5,921,924 71,804 (161,759) 5,831,969
MFS Emerging Markets Debt Local Currency Fund 8,395,687 115,878 (434,324) 8,077,241
MFS Global Bond Fund 16,893,808 128,397 (697,873) 16,324,332
MFS Global Real Estate Fund 1,911,880 12,287 (55,140) 1,869,027
MFS Government Securities Fund 29,839,761 297,755 (468,206) 29,669,310
MFS Growth Fund 2,035,203 6,429 (100,144) 1,941,488
MFS High Income Fund 42,692,782 678,377 (853,928) 42,517,231
MFS Inflation-Adjusted Bond Fund 28,141,199 350,578 (304,963) 28,186,814
MFS Institutional Money Market Portfolio 767,771 26,573,251 (25,286,481) 2,054,541
MFS International Growth Fund 1,916,847 4,903 (89,960) 1,831,790
MFS International Value Fund 1,455,526 4,056 (42,863) 1,416,719
MFS Limited Maturity Fund 49,105,422 496,188 (656,392) 48,945,218
MFS Mid Cap Growth Fund 7,174,595 25,929 (324,103) 6,876,421
MFS Mid Cap Value Fund 5,199,733 41,041 (129,406) 5,111,368
MFS New Discovery Fund 1,020,535 5,154 (35,437) 990,252
MFS New Discovery Value Fund 1,957,154 73,930 (25,061) 2,006,023
MFS Research Fund 4,306,955 3,824 (158,309) 4,152,470
MFS Research International Fund 6,739,085 16,093 (272,725) 6,482,453
MFS Total Return Bond Fund 41,291,639 367,637 (889,018) 40,770,258
MFS Value Fund 4,631,715 32,862 (169,301) 4,495,276
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Absolute Return Fund $(64,149) $737,489 $— $173,776 $58,523,944
MFS Commodity Strategy Fund (482,297) 1,071,742 29,524,732
MFS Emerging Markets Debt Fund (16,437) 1,070,435 1,035,851 88,470,964
MFS Emerging Markets Debt Local Currency Fund (399,388) 2,380,292 648,061 58,963,862
MFS Global Bond Fund (1,063,013) 4,559,760 631,018 146,755,746
MFS Global Real Estate Fund 46,489 980,741 29,530,623
3


Supplemental Information (unaudited) – continued
Affiliated Issuer − continued Realized
Gain (Loss)
  Change in
Unrealized
Appreciation
(Depreciation)
  Capital Gain
Distributions
  Dividend
Income
  Ending
Value
MFS Government Securities Fund $(285,367)   $879,907   $—   $2,010,626   $293,726,170
MFS Growth Fund 4,322,653   2,650,173       177,937,386
MFS High Income Fund (83,147)   (341,821)     1,851,382   147,109,620
MFS Inflation-Adjusted Bond Fund (261,455)   274,050     1,273,350   293,988,473
MFS Institutional Money Market Portfolio (288)   15     4,369   2,054,541
MFS International Growth Fund 527,659   1,296,492       58,837,093
MFS International Value Fund 625,399   26,412       58,808,001
MFS Limited Maturity Fund (135,487)   625,260     1,338,482   293,181,853
MFS Mid Cap Growth Fund 2,244,329   1,899,994       118,618,262
MFS Mid Cap Value Fund 974,053   361,021       116,539,192
MFS New Discovery Fund 183,022   886,966       29,717,445
MFS New Discovery Value Fund 32,795   (241,522)   375,670   299,283   29,307,998
MFS Research Fund 2,265,280   3,289,408       176,978,273
MFS Research International Fund 653,889   2,273,716       117,332,409
MFS Total Return Bond Fund (121,235)   2,988,208     2,938,325   440,726,487
MFS Value Fund 1,817,535   1,484,943     750,681   175,360,730
  $10,780,840   $29,153,681   $375,670   $12,955,204   $2,941,993,804
4


QUARTERLY REPORT
MFS®  Emerging Markets Equity Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 97.8%
Airlines – 0.5%  
Grupo Aeroportuario del Sureste S.A. de C.V., ADR     27,454 $ 5,591,282
Alcoholic Beverages – 2.8%  
AmBev S.A., ADR     2,961,245 $ 18,537,394
Becle S.A.B. de C.V. (a)     585,900 1,025,368
China Resources Enterprise Ltd.     5,404,000 13,562,222
        $ 33,124,984
Apparel Manufacturers – 0.8%  
Stella International Holdings     5,157,000 $ 9,133,440
Automotive – 1.3%  
Kia Motors Corp.     216,073 $ 6,793,001
Mahindra & Mahindra Ltd.     429,687 9,039,214
        $ 15,832,215
Business Services – 1.8%  
Cognizant Technology Solutions Corp., “A”     307,905 $ 21,790,437
Cable TV – 1.7%  
Naspers Ltd.     89,885 $ 20,320,868
Computer Software - Systems – 2.3%  
EPAM Systems, Inc. (a)     140,714 $ 11,444,269
Globant S.A. (a)     230,230 8,953,645
Linx S.A.     1,099,300 6,401,248
        $ 26,799,162
Construction – 2.2%  
PT Indocement Tunggal Prakarsa Tbk.     2,719,400 $ 4,035,686
Techtronic Industries Co. Ltd.     4,252,000 22,005,047
        $ 26,040,733
Consumer Products – 0.9%  
Dabur India Ltd.     2,151,566 $ 10,605,322
Consumer Services – 6.8%  
51job, Inc., ADR (a)     288,715 $ 17,149,671
China Maple Leaf Educational Systems     8,179,000 6,939,726
Ctrip.com International Ltd., ADR (a)     356,174 18,325,152
Kroton Educacional S.A.     2,618,000 14,945,268
MakeMyTrip Ltd. (a)     342,869 11,691,833
SEEK Ltd.     925,986 12,329,883
        $ 81,381,533
Electrical Equipment – 1.1%  
LS Industrial Systems Co. Ltd.     259,280 $ 13,382,490
Electronics – 10.6%  
Samsung Electronics Co. Ltd.     29,919 $ 61,451,227
Silicon Motion Technology Corp., ADR     266,900 12,173,309
Taiwan Semiconductor Manufacturing Co. Ltd.     7,375,695 52,912,223
        $ 126,536,759
1


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Energy - Independent – 1.1%  
Gran Tierra Energy, Inc. (a)     2,960,020 $ 6,068,189
Ultrapar Participacoes S.A.     275,540 6,429,281
        $ 12,497,470
Energy - Integrated – 2.4%  
LUKOIL PJSC, ADR     476,365 $ 23,937,341
YPF S.A., ADR     241,273 4,839,937
        $ 28,777,278
Food & Beverages – 3.8%  
AVI Ltd.     2,002,099 $ 15,204,179
BRF S.A. (a)     740,010 9,995,783
Orion Corp. (a)     143,376 11,100,323
Tingyi (Cayman Islands) Holding Corp.     6,502,000 8,657,425
        $ 44,957,710
Food & Drug Stores – 2.9%  
Clicks Group Ltd.     1,242,579 $ 14,213,184
Dairy Farm International Holdings Ltd.     1,223,700 9,911,970
Eurocash S.A.     976,530 10,714,373
        $ 34,839,527
Forest & Paper Products – 1.3%  
Fibria Celulose S.A.     1,153,207 $ 15,309,662
Furniture & Appliances – 1.4%  
Coway Co. Ltd.     190,929 $ 16,729,146
General Merchandise – 0.4%  
S.A.C.I. Falabella     502,799 $ 5,081,107
Insurance – 2.1%  
AIA Group Ltd.     2,513,200 $ 19,284,753
Samsung Fire & Marine Insurance Co. Ltd.     23,437 5,747,012
        $ 25,031,765
Internet – 11.4%  
Alibaba Group Holding Ltd., ADR (a)     369,260 $ 63,416,712
Baidu, Inc., ADR (a)     147,611 33,662,689
NAVER Corp.     13,546 9,069,909
Tencent Holdings Ltd.     705,100 29,642,897
        $ 135,792,207
Major Banks – 3.5%  
China Construction Bank     29,757,490 $ 26,085,216
Industrial & Commercial Bank of China, “H”     20,650,000 15,462,927
        $ 41,548,143
Metals & Mining – 1.1%  
Iluka Resources Ltd.     1,729,067 $ 13,016,719
Network & Telecom – 1.5%  
VTech Holdings Ltd.     1,255,900 $ 17,653,132
Oil Services – 0.7%  
Lamprell PLC (a)     6,087,375 $ 7,871,589
2


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Other Banks & Diversified Financials – 16.3%  
Banco Bradesco S.A., ADR     2,352,591 $ 25,031,568
Credicorp Ltd.     42,920 8,705,893
E.Sun Financial Holding Co. Ltd.     21,318,631 13,139,154
Grupo Financiero Banorte S.A. de C.V.     1,006,545 6,863,709
Grupo Financiero Inbursa S.A. de C.V.     7,761,879 12,980,421
Housing Development Finance Corp. Ltd.     1,292,564 35,928,229
Kasikornbank Co. Ltd.     1,964,500 12,483,346
Komercni Banka A.S.     100,356 4,422,824
Kotak Mahindra Bank Ltd.     1,257,589 19,200,358
PT Bank Central Asia Tbk     4,869,900 6,916,849
Public Bank Berhad     2,203,151 10,639,709
Sberbank of Russia     3,422,460 10,827,613
Shriram Transport Finance Co. Ltd.     983,127 15,148,395
Turkiye Sinai Kalkinma Bankasi A.S.     14,869,200 6,544,239
Union National Bank     4,696,159 5,408,465
        $ 194,240,772
Pharmaceuticals – 0.9%  
Genomma Lab Internacional S.A., “B” (a)     7,904,711 $ 10,128,888
Real Estate – 1.9%  
Aldar Properties PJSC     8,710,226 $ 5,488,199
Concentradora Fibra Hotelera Mexicana S.A. de C.V., REIT     5,489,760 4,492,089
Hang Lung Properties Ltd.     5,315,000 12,931,361
        $ 22,911,649
Restaurants – 3.5%  
Alsea S.A.B. de C.V.     1,673,585 $ 6,088,997
Jollibee Foods Corp.     1,518,800 7,070,123
Yum China Holdings, Inc. (a)     810,017 28,642,201
        $ 41,801,321
Specialty Chemicals – 1.4%  
Astra Argo Lestari     6,306,900 $ 6,972,476
PTT Global Chemical PLC     3,992,500 9,198,201
        $ 16,170,677
Specialty Stores – 3.1%  
Dufry AG (a)     146,018 $ 22,505,303
JD.com, Inc., ADR (a)     326,739 13,693,632
        $ 36,198,935
Telecommunications - Wireless – 1.0%  
Mobile TeleSystems PJSC, ADR     1,166,922 $ 11,657,551
Telephone Services – 0.6%  
PT XL Axiata Tbk (a)     28,101,850 $ 7,582,571
Tobacco – 0.5%  
PT Hanjaya Mandala Sampoerna Tbk     20,641,400 $ 5,631,442
Trucking – 1.1%  
Emergent Capital, Inc.     845,241 $ 13,555,044
Utilities - Electric Power – 1.1%  
CESC Ltd.     819,115 $ 13,014,608
Total Common Stocks   $1,162,538,138
3


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Preferred Stocks – 0.7%
Forest & Paper Products – 0.7%        
Suzano Papel e Celulose S.A.     1,556,100 $ 8,650,904
Investment Companies (h) – 1.6%
Money Market Funds – 1.6%
MFS Institutional Money Market Portfolio, 1.11% (v)     19,091,135 $ 19,091,135
Other Assets, Less Liabilities – (0.1)%   (1,254,064)
Net Assets – 100.0% $1,189,026,113
(a) Non-income producing security.      
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $19,091,135 and $1,171,189,042, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
The following abbreviations are used in this report and are defined:
ADR American Depositary Receipt
PJSC Public Joint Stock Company
PLC Public Limited Company
REIT Real Estate Investment Trust
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
4


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities:        
China $275,240,469 $— $— $275,240,469
South Korea 124,273,110 124,273,110
India 114,627,959 114,627,959
Brazil 105,301,109 105,301,109
Hong Kong 90,919,705 90,919,705
Taiwan 78,224,686 78,224,686
South Africa 63,293,274 63,293,274
Mexico 47,170,754 47,170,754
Russia 35,594,892 10,827,613 46,422,505
Other Countries 200,389,363 25,326,108 225,715,471
Mutual Funds 19,091,135 19,091,135
Total $1,154,126,456 $36,153,721 $— $1,190,280,177
For further information regarding security characteristics, see the Portfolio of Investments.
5


Supplemental Information (unaudited) – continued
Of the level 2 investments presented above, equity investments amounting to $16,127,908 would have been considered level 1 investments at the beginning of the period. The primary reason for changes in the classifications between levels 1 and 2 occurs when foreign equity securities are fair valued using other observable market-based inputs in place of the closing exchange price due to events occurring after the close of the exchange or market on which the investment is principally traded. The fund’s foreign equity securities may often be valued using other observable market-based inputs. The fund's policy is to recognize transfers between the levels as of the end of the period.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $926,254,618
Gross unrealized appreciation 286,844,915
Gross unrealized depreciation (22,819,356)
Net unrealized appreciation (depreciation) $264,025,559
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Institutional Money Market Portfolio 19,889,594 58,619,557 (59,418,016) 19,091,135
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Institutional Money Market Portfolio $(782) $167 $— $64,625 $19,091,135
(4) Issuer Country Weightings
Issuer country weighting percentages of portfolio holdings based on net assets, as of August 31, 2017, are as follows:
China 23.1%
South Korea 10.5%
India 9.6%
Brazil 8.9%
Hong Kong 7.6%
Taiwan 6.6%
South Africa 5.3%
United States 4.3%
Mexico 4.0%
Other Countries 20.1%
6


QUARTERLY REPORT
MFS®  Growth
Allocation Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Investment Companies (h) – 100.0%
Bond Funds – 19.9%
MFS Emerging Markets Debt Fund - Class R6     9,905,444 $ 150,265,586
MFS Emerging Markets Debt Local Currency Fund - Class R6     13,726,859 100,206,071
MFS Global Bond Fund - Class R6     11,083,358 99,639,387
MFS High Income Fund - Class R6     72,188,148 249,770,994
MFS Inflation-Adjusted Bond Fund - Class R6     23,885,757 249,128,449
MFS Total Return Bond Fund - Class R6     13,838,841 149,597,868
        $ 998,608,355
International Stock Funds – 19.9%
MFS Emerging Markets Equity Fund - Class R6     1,453,221 $ 50,150,654
MFS International Growth Fund - Class R6     7,785,737 250,077,867
MFS International New Discovery Fund - Class R6     2,970,442 100,074,187
MFS International Value Fund - Class R6     6,023,160 250,021,366
MFS Research International Fund - Class R6     19,307,672 349,468,864
        $ 999,792,938
Specialty Funds – 7.9%
MFS Absolute Return Fund - Class R6     5,120,407 $ 49,616,739
MFS Commodity Strategy Fund - Class R6 (v)     34,025,856 198,030,482
MFS Global Real Estate Fund - Class R6     9,531,857 150,603,348
        $ 398,250,569
U.S. Stock Funds – 52.0%
MFS Growth Fund - Class R6     6,051,807 $ 554,648,077
MFS Mid Cap Growth Fund - Class R6     26,308,367 453,819,331
MFS Mid Cap Value Fund - Class R6     19,575,223 446,315,079
MFS New Discovery Fund - Class R6     3,367,881 101,070,116
MFS New Discovery Value Fund - Class R6     6,823,314 99,688,620
MFS Research Fund - Class R6     9,418,437 401,413,773
MFS Value Fund - Class R6     14,007,525 546,433,553
        $ 2,603,388,549
Money Market Funds – 0.3%
MFS Institutional Money Market Portfolio, 1.11% (v)     13,089,679 $ 13,089,679
Total Investment Companies $5,013,130,090
Other Assets, Less Liabilities – (0.0)%   (2,262,334)
Net Assets – 100.0% $5,010,867,756
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $5,013,130,090 and $0, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
1


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, “fund” also refers to the underlying funds in which the fund-of-funds invests.
Equity securities, including restricted equity securities and equity securities held short, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities held short, for which there were no sales reported for that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service.  Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing service. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued at valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. Securities and other assets, including commodity-linked structured notes, generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other
2


Supplemental Information (unaudited) – continued
significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Mutual Funds $5,013,130,090 $— $— $5,013,130,090
For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds’ shareholder reports for further information regarding the levels used in valuing the underlying funds’ assets or liabilities.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $3,402,300,668
Gross unrealized appreciation 1,693,928,006
Gross unrealized depreciation (83,098,584)
Net unrealized appreciation (depreciation) $1,610,829,422
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be affiliated issuers:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Absolute Return Fund 5,213,504 24,960 (118,057) 5,120,407
MFS Commodity Strategy Fund 33,359,387 666,469 34,025,856
MFS Emerging Markets Debt Fund 10,054,591 128,136 (277,283) 9,905,444
MFS Emerging Markets Debt Local Currency Fund 14,298,358 163,594 (735,093) 13,726,859
MFS Emerging Markets Equity Fund 1,592,705 44 (139,528) 1,453,221
MFS Global Bond Fund 11,482,102 57,113 (455,857) 11,083,358
MFS Global Real Estate Fund 9,674,162 19,957 (162,262) 9,531,857
MFS Growth Fund 6,436,608 611 (385,412) 6,051,807
MFS High Income Fund 72,525,766 993,577 (1,331,195) 72,188,148
MFS Inflation-Adjusted Bond Fund 23,752,635 240,877 (107,755) 23,885,757
MFS Institutional Money Market Portfolio 7,939,564 41,780,904 (36,630,789) 13,089,679
MFS International Growth Fund 8,303,706 124 (518,093) 7,785,737
MFS International New Discovery Fund 3,136,049 29 (165,636) 2,970,442
MFS International Value Fund 6,296,981 872 (274,693) 6,023,160
MFS Mid Cap Growth Fund 27,853,381 1,049 (1,546,063) 26,308,367
MFS Mid Cap Value Fund 19,932,857 44,836 (402,470) 19,575,223
MFS New Discovery Fund 3,506,114 586 (138,819) 3,367,881
MFS New Discovery Value Fund 6,661,221 188,503 (26,410) 6,823,314
MFS Research Fund 9,865,286 814 (447,663) 9,418,437
MFS Research International Fund 20,408,748 2,464 (1,103,540) 19,307,672
MFS Total Return Bond Fund 13,965,104 113,459 (239,722) 13,838,841
MFS Value Fund 14,538,862 70,406 (601,743) 14,007,525
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Absolute Return Fund $(47,529) $621,965 $— $148,049 $49,616,739
MFS Commodity Strategy Fund 3,803,125 198,030,482
MFS Emerging Markets Debt Fund (67,390) 1,859,806 1,764,908 150,265,586
MFS Emerging Markets Debt Local Currency Fund (666,835) 4,046,878 1,107,919 100,206,071
MFS Emerging Markets Equity Fund 352,640 3,475,968 50,150,654
MFS Global Bond Fund (723,823) 3,113,542 430,849 99,639,387
3


Supplemental Information (unaudited) – continued
Affiliated Issuer − continued Realized
Gain (Loss)
  Change in
Unrealized
Appreciation
(Depreciation)
  Capital Gain
Distributions
  Dividend
Income
  Ending
Value
MFS Global Real Estate Fund $83,379   $5,128,376   $—   $—   $150,603,348
MFS Growth Fund 13,916,789   7,904,357       554,648,077
MFS High Income Fund (245,040)   (482,148)     3,155,747   249,770,994
MFS Inflation-Adjusted Bond Fund (99,968)   112,567     1,073,269   249,128,449
MFS Institutional Money Market Portfolio 407   (255)     28,585   13,089,679
MFS International Growth Fund 2,736,213   5,075,229       250,077,867
MFS International New Discovery Fund 888,672   1,862,205       100,074,187
MFS International Value Fund 2,333,625   442,929       250,021,366
MFS Mid Cap Growth Fund 5,111,674   10,824,019       453,819,331
MFS Mid Cap Value Fund 1,616,432   3,499,277       446,315,079
MFS New Discovery Fund 476,742   3,167,753       101,070,116
MFS New Discovery Value Fund 29,226   (766,422)   1,287,783   1,025,931   99,688,620
MFS Research Fund 2,834,744   9,836,486       401,413,773
MFS Research International Fund 1,429,678   7,361,808       349,468,864
MFS Total Return Bond Fund (62,129)   1,035,978     998,847   149,597,868
MFS Value Fund 3,396,826   7,005,247     2,369,729   546,433,553
  $33,294,333   $78,928,690   $1,287,783   $12,103,833   $5,013,130,090
4


QUARTERLY REPORT
MFS®  International DiversificationSM  Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Investment Companies (h) – 99.8%
International Stock Funds – 99.7%
MFS Emerging Markets Equity Fund - Class R6     25,122,523 $ 866,978,272
MFS International Growth Fund - Class R6     67,281,159 2,161,070,822
MFS International New Discovery Fund - Class R6     25,658,678 864,440,873
MFS International Value Fund - Class R6     52,062,728 2,161,123,834
MFS Research International Fund - Class R6     143,264,785 2,593,092,602
        $ 8,646,706,403
Money Market Funds – 0.1%
MFS Institutional Money Market Portfolio, 1.11% (v)     11,724,321 $ 11,724,321
Total Investment Companies $8,658,430,724
Other Assets, Less Liabilities – 0.2%   14,477,116
Net Assets – 100.0% $8,672,907,840
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $8,658,430,724 and $0, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
1


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, “fund” also refers to the underlying funds in which the fund-of-funds invests.
Equity securities, including restricted equity securities and equity securities held short, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities held short, for which there were no sales reported for that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service.  Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing service. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued at valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other
2


Supplemental Information (unaudited) – continued
significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Mutual Funds $8,658,430,724 $— $— $8,658,430,724
For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds’ shareholder reports for further information regarding the levels used in valuing the underlying funds’ assets or liabilities.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $7,264,364,592
Gross unrealized appreciation 1,394,066,132
Gross unrealized depreciation
Net unrealized appreciation (depreciation) $1,394,066,132
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be affiliated issuers:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Emerging Markets Equity Fund 23,898,489 1,494,415 (270,381) 25,122,523
MFS Institutional Money Market Portfolio 18,120,933 133,557,416 (139,954,028) 11,724,321
MFS International Growth Fund 61,395,716 5,947,905 (62,462) 67,281,159
MFS International New Discovery Fund 23,329,998 2,400,930 (72,250) 25,658,678
MFS International Value Fund 46,577,607 5,523,730 (38,609) 52,062,728
MFS Research International Fund 129,953,107 13,471,597 (159,919) 143,264,785
Affiliated Issuer Realized
Gain (Loss)
  Change in
Unrealized
Appreciation
(Depreciation)
  Capital Gain
Distributions
  Dividend
Income
  Ending
Value
MFS Emerging Markets Equity Fund $1,764,669   $60,248,028   $—   $—   $866,978,272
MFS Institutional Money Market Portfolio (1,478)       44,247   11,724,321
MFS International Growth Fund 793,820   62,026,773       2,161,070,822
MFS International New Discovery Fund 1,043,063   21,363,104       864,440,873
MFS International Value Fund 711,123   22,456,855       2,161,123,834
MFS Research International Fund 822,115   59,560,878       2,593,092,602
  $5,133,312   $225,655,638   $—   $44,247   $8,658,430,724
3


QUARTERLY REPORT
MFS®  International Growth Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 98.7%
Aerospace – 1.0%  
Rolls-Royce Holdings PLC     4,363,592 $ 51,573,032
Alcoholic Beverages – 5.2%  
AmBev S.A., ADR     4,493,328 $ 28,128,233
Carlsberg A.S., “B”     169,052 19,401,872
Diageo PLC     2,918,087 97,806,016
Pernod Ricard S.A. (l)     886,104 121,098,285
        $ 266,434,406
Apparel Manufacturers – 5.0%  
Burberry Group PLC     1,844,917 $ 42,870,371
Kering S.A.     249,981 93,830,144
LVMH Moet Hennessy Louis Vuitton SE     455,362 119,394,442
        $ 256,094,957
Broadcasting – 1.7%  
Publicis Groupe S.A.     559,521 $ 37,766,858
WPP PLC     2,671,796 49,059,597
        $ 86,826,455
Business Services – 8.4%  
Accenture PLC, “A”     960,724 $ 125,624,270
Amadeus IT Holding S.A.     1,398,201 86,669,960
Brenntag AG     765,194 40,549,858
Compass Group PLC     3,120,273 66,655,343
Experian Group Ltd.     2,237,275 44,957,559
Intertek Group PLC     964,505 63,732,025
        $ 428,189,015
Computer Software – 4.3%  
Dassault Systems S.A.     565,770 $ 55,733,886
OBIC Co. Ltd.     622,800 39,032,992
SAP AG     1,198,998 125,749,358
        $ 220,516,236
Computer Software - Systems – 1.6%  
NICE Systems Ltd., ADR     1,048,527 $ 82,015,782
Construction – 0.8%  
Toto Ltd.     1,131,900 $ 43,089,112
Consumer Products – 4.7%  
L'Oréal     518,529 $ 109,475,176
Reckitt Benckiser Group PLC     1,044,707 99,048,817
Shiseido Co. Ltd.     737,300 30,575,801
        $ 239,099,794
Containers – 0.5%  
Brambles Ltd.     3,737,921 $ 27,664,290
Electrical Equipment – 5.2%  
Keyence Corp.     78,700 $ 40,991,149
Legrand S.A.     309,235 21,675,436
Mettler-Toledo International, Inc. (a)     120,534 72,933,918
Prysmian S.p.A.     1,470,596 46,252,755
1


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Electrical Equipment – continued  
Schneider Electric S.A.     1,056,561 $ 85,189,694
        $ 267,042,952
Electronics – 3.6%  
MediaTek, Inc.     2,509,000 $ 22,488,634
Mellanox Technologies Ltd. (a)     337,550 15,847,973
Taiwan Semiconductor Manufacturing Co. Ltd., ADR     3,856,680 142,581,460
        $ 180,918,067
Energy - Independent – 1.1%  
Caltex Australia Ltd.     1,009,591 $ 26,797,953
Oil Search Ltd.     5,295,946 28,249,176
        $ 55,047,129
Energy - Integrated – 0.8%  
Suncor Energy, Inc.     1,313,293 $ 41,152,476
Food & Beverages – 5.9%  
Danone S.A.     1,276,398 $ 100,514,189
Nestle S.A.     2,359,041 200,123,036
        $ 300,637,225
Food & Drug Stores – 1.2%  
Sundrug Co. Ltd.     1,427,400 $ 59,142,284
Gaming & Lodging – 0.7%  
Paddy Power Betfair PLC     401,417 $ 35,374,797
Insurance – 2.8%  
AIA Group Ltd.     18,699,000 $ 143,484,644
Internet – 4.5%  
Alibaba Group Holding Ltd., ADR (a)     792,941 $ 136,179,687
Baidu, Inc., ADR (a)     318,789 72,699,831
NAVER Corp.     31,253 20,925,874
        $ 229,805,392
Leisure & Toys – 0.3%  
BANDAI NAMCO Holdings, Inc.     427,100 $ 14,316,310
Machinery & Tools – 1.4%  
GEA Group AG     931,854 $ 41,045,071
Ritchie Bros. Auctioneers, Inc.     1,079,469 32,087,999
        $ 73,133,070
Major Banks – 2.6%  
HSBC Holdings PLC     5,864,060 $ 56,909,063
UBS AG     4,578,250 75,432,869
        $ 132,341,932
Medical & Health Technology & Services – 1.4%  
Fresenius Medical Care AG & Co. KGaA     740,067 $ 69,159,541
Medical Equipment – 3.9%  
Essilor International S.A.     454,082 $ 57,326,624
QIAGEN N.V. (a)     1,272,161 40,821,863
Sonova Holding AG     196,492 33,214,822
2


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Medical Equipment – continued  
Terumo Corp.     1,708,700 $ 66,056,988
        $ 197,420,297
Network & Telecom – 0.6%  
LM Ericsson Telephone Co., “B”     5,312,100 $ 31,134,191
Other Banks & Diversified Financials – 7.1%  
Aeon Credit Service Co. Ltd.     1,597,500 $ 33,872,493
Credicorp Ltd.     248,099 50,324,401
DBS Group Holdings Ltd.     3,363,900 51,154,997
Element Fleet Management Corp.     2,565,315 19,228,307
Grupo Financiero Banorte S.A. de C.V.     5,533,027 37,730,142
Grupo Financiero Inbursa S.A. de C.V.     6,899,160 11,537,670
HDFC Bank Ltd.     4,378,014 121,753,322
Julius Baer Group Ltd.     669,978 37,448,064
        $ 363,049,396
Pharmaceuticals – 8.6%  
Bayer AG     812,354 $ 103,959,742
Novartis AG     1,420,499 119,837,707
Novo Nordisk A.S., “B”     876,835 41,825,227
Roche Holding AG     676,134 171,686,354
        $ 437,309,030
Railroad & Shipping – 2.7%  
Adani Ports and Special Economic Zone Ltd.     1,827,682 $ 11,234,628
Canadian National Railway Co.     1,535,210 124,336,658
        $ 135,571,286
Restaurants – 1.3%  
Whitbread PLC     964,784 $ 46,883,411
Yum China Holdings, Inc. (a)     549,962 19,446,656
        $ 66,330,067
Specialty Chemicals – 6.9%  
Akzo Nobel N.V.     1,025,667 $ 93,773,259
Croda International PLC     756,013 37,559,427
L'Air Liquide S.A.     559,486 68,302,452
Linde AG     363,024 69,599,717
Sika AG     4,527 32,101,361
Symrise AG     699,407 51,122,226
        $ 352,458,442
Telecommunications - Wireless – 0.9%  
SoftBank Corp.     586,700 $ 47,614,840
Tobacco – 1.7%  
ITC Ltd.     7,321,903 $ 32,327,989
Japan Tobacco, Inc.     1,579,700 54,086,422
        $ 86,414,411
Trucking – 0.3%  
Yamato Holdings Co. Ltd.     742,500 $ 15,831,355
Total Common Stocks   $5,036,192,213
3


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Investment Companies (h) – 1.2%
Money Market Funds – 1.2%
MFS Institutional Money Market Portfolio, 1.11% (v)     61,270,527 $ 61,270,527
Other Assets, Less Liabilities – 0.1%   5,730,324
Net Assets – 100.0% $5,103,193,064
(a) Non-income producing security.      
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $61,270,527 and $5,036,192,213, respectively.      
(l) A portion of this security is on loan.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
The following abbreviations are used in this report and are defined:
ADR American Depositary Receipt
PLC Public Limited Company
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
4


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities $5,036,192,213 $— $— $5,036,192,213
Mutual Funds 61,270,527 61,270,527
Total $5,097,462,740 $— $— $5,097,462,740
For further information regarding security characteristics, see the Portfolio of Investments.
(2) Securities Lending Collateral
At August 31, 2017, the value of securities loaned was $102,645,774. These loans were collateralized by U.S. Treasury obligations of $109,885,411.
5


Supplemental Information (unaudited) – continued
(3) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $3,793,154,475
Gross unrealized appreciation 1,396,596,401
Gross unrealized depreciation (92,288,136)
Net unrealized appreciation (depreciation) $1,304,308,265
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(4) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Institutional Money Market Portfolio 43,619,720 158,096,794 (140,445,987) 61,270,527
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Institutional Money Market Portfolio $1,620 $3,640 $— $131,077 $61,270,527
(5) Issuer Country Weightings
Issuer country weighting percentages of portfolio holdings based on net assets, as of August 31, 2017, are as follows:
France 17.1%
Switzerland 13.1%
United Kingdom 12.9%
Germany 10.6%
Japan 8.7%
United States 5.4%
China 4.5%
Canada 4.3%
India 3.2%
Other Countries 20.2%
6


QUARTERLY REPORT
MFS®  International
Value Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 91.7%
Airlines – 0.3%  
Ryanair Holdings PLC (a)     606,587 $ 68,968,942
Alcoholic Beverages – 3.8%  
Heineken N.V.     4,584,630 $ 480,993,790
Pernod Ricard S.A. (l)     4,326,237 591,239,721
        $ 1,072,233,511
Apparel Manufacturers – 0.8%  
Compagnie Financiere Richemont S.A.     2,364,475 $ 211,433,058
Automotive – 0.3%  
USS Co. Ltd.     4,357,900 $ 85,663,546
Brokerage & Asset Managers – 0.6%  
Daiwa Securities Group, Inc.     15,115,000 $ 82,741,684
IG Group Holdings PLC     11,590,598 96,671,374
        $ 179,413,058
Business Services – 11.8%  
Amadeus IT Holding S.A.     8,725,023 $ 540,835,967
Brenntag AG     3,507,489 185,872,056
Bunzl PLC     14,821,106 442,715,704
Compass Group PLC     32,743,629 699,470,153
Experian Group Ltd.     5,955,085 119,666,148
Intertek Group PLC     2,967,774 196,102,920
Nomura Research, Inc.     10,871,018 423,231,519
Rentokil Initial PLC     13,361,961 52,612,608
Secom Co. Ltd.     4,015,600 298,133,690
SGS S.A.     134,735 301,097,143
Sohgo Security Services Co. Ltd.     1,476,400 64,529,968
        $ 3,324,267,876
Chemicals – 2.5%  
Givaudan S.A.     270,896 $ 553,684,926
Orica Ltd.     9,587,770 154,951,118
        $ 708,636,044
Computer Software – 5.0%  
ANSYS, Inc. (a)     2,148,669 $ 276,791,541
Cadence Design Systems, Inc. (a)     13,862,367 544,652,400
Check Point Software Technologies Ltd. (a)     1,431,167 160,104,652
Dassault Systems S.A.     2,128,265 209,654,946
OBIC Co. Ltd.     3,548,400 222,390,285
        $ 1,413,593,824
Construction – 0.4%  
Geberit AG     229,244 $ 104,731,004
Consumer Products – 9.6%  
Colgate-Palmolive Co.     8,952,653 $ 641,368,061
Kao Corp.     9,733,900 607,577,403
Kobayashi Pharmaceutical Co. Ltd. (h)     4,512,200 280,332,251
KOSE Corp.     501,200 62,914,995
L'Oréal     660,471 139,442,883
Reckitt Benckiser Group PLC     8,714,138 826,188,648
1


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Consumer Products – continued  
ROHTO Pharmaceutical Co. Ltd.     5,656,500 $ 131,308,392
        $ 2,689,132,633
Containers – 1.8%  
Brambles Ltd.     69,352,484 $ 513,276,557
Electrical Equipment – 5.0%  
IMI PLC (h)     19,439,564 $ 285,308,503
Legrand S.A.     4,652,267 326,094,775
OMRON Corp.     4,378,700 219,861,045
Schneider Electric S.A.     4,128,304 332,861,951
Spectris PLC     5,188,925 155,264,826
Yokogawa Electric Corp.     5,552,300 86,515,577
        $ 1,405,906,677
Electronics – 8.0%  
Analog Devices, Inc.     3,113,052 $ 260,469,061
ASM International N.V.     716,566 42,122,942
Halma PLC     16,426,129 232,160,176
Hirose Electric Co. Ltd.     1,885,335 261,016,043
Infineon Technologies AG     15,252,553 351,709,072
NVIDIA Corp.     718,330 121,713,835
Taiwan Semiconductor Manufacturing Co. Ltd., ADR     17,789,092 657,662,731
Texas Instruments, Inc.     3,718,430 307,960,373
        $ 2,234,814,233
Energy - Independent – 0.5%  
Cairn Energy PLC (a)     19,199,035 $ 42,577,079
INPEX Corp.     11,165,400 106,743,397
        $ 149,320,476
Food & Beverages – 10.0%  
Danone S.A.     9,906,842 $ 780,147,090
ITO EN Ltd. (h)     5,661,300 208,562,014
Kerry Group PLC     3,025,285 281,741,636
Nestle S.A.     14,425,616 1,223,759,176
Nissan Foods Holdings Co. Ltd.     1,120,800 69,122,881
Toyo Suisan Kaisha Ltd. (h)     6,422,700 237,488,293
        $ 2,800,821,090
Insurance – 2.5%  
Euler Hermes Group     720,341 $ 85,547,236
Fairfax Financial Holdings Ltd.     743,807 386,618,817
Hiscox Ltd.     8,374,448 138,394,674
Jardine Lloyd Thompson Group PLC     6,843,361 102,207,736
        $ 712,768,463
Leisure & Toys – 0.2%  
Yamaha Corp.     1,790,900 $ 62,392,750
Machinery & Tools – 4.1%  
GEA Group AG     6,530,132 $ 287,630,603
Glory Ltd.     1,944,700 66,158,894
Misumi Group, Inc.     4,605,100 118,169,710
Neopost S.A.     1,049,643 45,621,006
Nordson Corp.     1,847,060 201,883,658
Schindler Holding AG     510,351 109,313,411
Spirax Sarco Engineering PLC     3,414,425 248,133,972
2


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Machinery & Tools – continued  
Wartsila Corp.     1,003,402 $ 69,221,309
        $ 1,146,132,563
Major Banks – 3.0%  
Sumitomo Mitsui Financial Group, Inc.     5,395,900 $ 201,925,980
Svenska Handelsbanken AB, “A”     22,673,117 338,994,595
UBS AG     17,426,192 287,120,114
        $ 828,040,689
Medical Equipment – 1.9%  
Dentsply Sirona, Inc.     2,825,802 $ 159,855,619
Nihon Kohden Corp. (h)     8,370,900 194,167,417
Terumo Corp.     4,881,300 188,707,191
        $ 542,730,227
Oil Services – 0.4%  
Core Laboratories N.V.     1,087,454 $ 95,891,694
Other Banks & Diversified Financials – 3.7%  
Bank of Ireland Group PLC (a)     8,684,631 $ 72,370,374
Chiba Bank Ltd.     11,403,000 76,341,547
DnB NOR A.S.A.     9,473,167 184,995,366
Hachijuni Bank Ltd.     11,186,700 68,177,459
ING Groep N.V.     15,046,969 266,898,850
Julius Baer Group Ltd.     1,636,275 91,458,721
Jyske Bank A.S.     1,420,192 85,452,260
Mebuki Financial Group, Inc.     18,838,670 66,831,139
North Pacific Bank Ltd.     16,768,700 50,488,377
Sydbank A.S.     1,883,144 73,458,697
        $ 1,036,472,790
Pharmaceuticals – 3.0%  
Bayer AG     2,154,099 $ 275,667,477
Roche Holding AG     1,048,008 266,113,925
Santen Pharmaceutical Co. Ltd.     19,575,300 303,774,610
        $ 845,556,012
Printing & Publishing – 0.6%  
RELX N.V.     8,057,407 $ 169,153,962
Real Estate – 4.4%  
Deutsche Wohnen SE     11,587,568 $ 492,185,199
LEG Immobilien AG     1,704,157 172,237,892
TAG Immobilien AG     6,518,990 108,802,716
Vonovia SE     10,983,640 464,244,978
        $ 1,237,470,785
Specialty Chemicals – 1.4%  
Sika AG     8,250 $ 58,501,486
Symrise AG     4,590,127 335,509,236
        $ 394,010,722
Specialty Stores – 0.2%  
Esprit Holdings Ltd. (a)     92,467,621 $ 53,525,646
Telecommunications - Wireless – 1.6%  
KDDI Corp.     16,824,100 $ 454,060,169
3


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Tobacco – 3.1%  
British American Tobacco PLC     7,324,937 $ 457,586,565
Japan Tobacco, Inc.     12,381,100 423,909,223
        $ 881,495,788
Trucking – 1.2%  
Yamato Holdings Co. Ltd.     15,441,000 $ 329,228,217
Total Common Stocks   $25,751,143,006
Preferred Stocks – 2.3%
Consumer Products – 2.3%        
Henkel AG & Co. KGaA     4,799,797 $ 643,101,877
Investment Companies (h) – 5.7%
Money Market Funds – 5.7%
MFS Institutional Money Market Portfolio, 1.11% (v)     1,604,098,912 $ 1,604,098,912
Other Assets, Less Liabilities – 0.3%   74,978,484
Net Assets – 100.0% $28,073,322,279
(a) Non-income producing security.      
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $2,809,957,390 and $25,188,386,405, respectively.      
(l) A portion of this security is on loan.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
The following abbreviations are used in this report and are defined:
ADR American Depositary Receipt
PLC Public Limited Company
Abbreviations indicate amounts shown in currencies other than the U.S. dollar. All amounts are stated in U.S. dollars unless otherwise indicated. A list of abbreviations is shown below:
EUR Euro
JPY Japanese Yen
Derivative Contracts at 8/31/17
Forward Foreign Currency Exchange Contracts at 8/31/17
Currency Purchased Currency Sold Counterparty Settlement Date Unrealized
Appreciation/
(Depreciation)
Asset Derivatives
EUR 117,383,500 USD 140,098,381 Deutsche Bank AG 2/23/2018 $975,668
EUR 117,383,500 USD 139,745,057 Morgan Stanley Capital Services, Inc. 2/23/2018 1,328,992
USD 489,602,812 JPY 52,776,245,500 Deutsche Bank AG 2/23/2018 5,255,180
USD 489,507,448 JPY 52,776,245,500 Morgan Stanley Capital Services, Inc. 2/23/2018 5,159,816
            $12,719,656
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
4


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Open-end investment companies are generally valued at net asset value per share. Securities and other assets, including commodity-linked structured notes, generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. Other financial instruments are derivative instruments not reflected in total investments, such as forward foreign currency exchange contracts. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities $26,394,244,883 $— $— $26,394,244,883
Mutual Funds 1,604,098,912 1,604,098,912
Total $27,998,343,795 $— $— $27,998,343,795
Other Financial Instruments Level 1 Level 2 Level 3 Total
Forward Foreign Currency
Exchange Contracts - Assets
$— $12,719,656 $— $12,719,656
For further information regarding security characteristics, see the Portfolio of Investments.
(2) Securities Lending Collateral
At August 31, 2017, the value of securities loaned was $395,190,261. These loans were collateralized by U.S. Treasury Obligations of $423,063,149.
5


Supplemental Information (unaudited) – continued
(3) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $20,576,223,151
Gross unrealized appreciation 7,784,481,763
Gross unrealized depreciation (362,361,119)
Net unrealized appreciation (depreciation) $7,422,120,644
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(4) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be affiliated issuers:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
IMI PLC 19,439,564 - - 19,439,564
ITO EN Ltd. 5,661,300 - - 5,661,300
Kobayashi Pharmaceutical Co. Ltd. 4,512,200 - - 4,512,200
MFS Institutional Money Market Portfolio 1,155,695,971 795,647,346 (347,244,405) 1,604,098,912
Nihon Kohden Corp. 8,370,900 - - 8,370,900
Toyo Suisan Kaisha Ltd. 5,704,200 718,500 - 6,422,700
Affiliated Issuer Realized
Gain (Loss)
  Change in
Unrealized
Appreciation
(Depreciation)
  Capital Gain
Distributions
  Dividend
Income
  Ending
Value
IMI PLC $-   $(28,779,844)   $-   $3,585,508   $285,308,503
ITO EN Ltd. -   (25,557,661)   -   5,197   208,562,014
Kobayashi Pharmaceutical Co. Ltd. -   14,285,605   -   1,125,788   280,332,251
MFS Institutional Money Market Portfolio (7,877)   23,004   -   3,642,130   1,604,098,912
Nihon Kohden Corp. -   7,399,978   -   -   194,167,417
Toyo Suisan Kaisha Ltd. -   (12,238,257)   -   -   237,488,293
  $(7,877)   $(44,867,175)   $-   $8,358,623   $2,809,957,390
(5) Issuer Country Weightings
Issuer country weighting percentages of portfolio holdings based on net assets, as of August 31, 2017, are as follows:
Japan 21.5%
United States 15.3%
United Kingdom 14.6%
Germany 11.8%
Switzerland 11.4%
France 8.9%
Netherlands 3.4%
Australia 2.4%
Taiwan 2.3%
Other Countries 8.4%
6


QUARTERLY REPORT

August 31, 2017

 

LOGO

 

MFS® MANAGED

WEALTH FUND

 

LOGO


PORTFOLIO OF INVESTMENTS

8/31/17 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

 

Issuer     Shares/Par     Value ($)  
Investment Companies (h) - 97.7%  
International Stock Funds - 30.2%  
MFS Institutional International Equity Fund       292,029     $ 7,145,950  
U.S. Stock Funds - 60.5%  
MFS Value Fund - Class R6       182,582     $ 7,122,542  
MFS Growth Fund - Class R6       78,535       7,197,718  
Total U.S. Stock Funds     $ 14,320,260  
Money Market Funds - 7.0%  
MFS Institutional Money Market Portfolio, 1.11% (v)       1,650,333     $ 1,650,333  
Total Investment Companies     $ 23,116,543  
Underlying/Expiration Date/Exercise Price    Put/Call     Counterparty     Notional
Amount
   

Number of

Contracts

        
Purchased Options - 0.1%  
Index Options - 0.1%  
Russell 2000 Index - September 2017 @ $1,330      Put       Exchange traded     $ 843,166       6     $ 846  
Russell 2000 Index - December 2017 @ $1,200      Put       Exchange traded       1,545,805       11       7,810  
S&P 500 Index - September 2017 @ $2,350      Put       Exchange traded       988,660       4       560  
S&P 500 Index - December 2017 @ $1,950      Put       Exchange traded       2,224,485       9       3,735  
S&P 500 Index - January 2018 @ $2,200      Put       Exchange traded       741,495       3       6,300  
Total Purchased Options     $ 19,251  
Other Assets, Less Liabilities - 2.2%       525,838  
Net Assets - 100.0%     $ 23,661,632  

 

(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund’s investments in affiliated issuers and in unaffiliated issuers were $23,116,543 and $19,251, respectively.
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.

Derivative Contracts at 8/31/17

Futures Contracts at 8/31/17

 

Description   Long/Short      Currency      Contracts      Notional
Amount
   Expiration Date     

Value/

Unrealized
Appreciation
(Depreciation)

 
Asset Derivatives                 
Equity Futures                 
Russell 1000 Mini Value Index     Short        USD        97      $5,509,115      September - 2017        $8,343  
                

 

 

 
Liability Derivatives                 
Equity Futures                 
Mini MSCI EAFE Index    
Short
 
     USD        58      $5,610,920      September - 2017        $(125,073
Russell 1000 Mini Growth Index     Short        USD        90      5,594,400      September - 2017        (228,195
                

 

 

 
                   $(353,268
                

 

 

 

At August 31, 2017, the fund had cash collateral of $638,300 to cover any collateral or margin obligations for derivative contracts.

See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.

 

1


Supplemental Information

8/31/17 (unaudited)

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services – Investment Companies.

(1) Investment Valuations

Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, “fund” also refers to the underlying funds in which the fund-of-funds invests.

Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing service. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund’s assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser’s own assumptions in determining the fair value of investments. Other

 

2


Supplemental Information (unaudited) – continued

 

financial instruments are derivative instruments not reflected in total investments, such as futures contracts. The following is a summary of the levels used as of August 31, 2017 in valuing the fund’s assets or liabilities:

 

Financial Instruments    Level 1      Level 2      Level 3      Total  
Equity Securities:            

United States

     $11,441        $7,810        $—        $19,251  
Mutual Funds      23,116,543                      23,116,543  
Total      $23,127,984        $7,810        $—        $23,135,794  
Other Financial Instruments                            
Futures Contracts - Assets      $8,343        $—        $—        $8,343  
Futures Contracts - Liabilities      (353,268                    (353,268

For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds’ shareholder reports for further information regarding the levels used in valuing the underlying funds’ assets or liabilities.

(2) Portfolio Securities

The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:

 

Aggregate cost      $19,863,624  
Gross unrealized appreciation      3,320,398  
Gross unrealized depreciation      (48,228
Net unrealized appreciation (depreciation)      $3,272,170  

The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.

(3) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be affiliated issuers:

 

Affiliated Issuers            Beginning
Shares/Par
Amount
     Acquisitions
Shares/Par
Amount
     Dispositions
Shares/Par
Amount
     Ending
Shares/Par
Amount
 
MFS Growth Fund         82,405        2,337        (6,207      78,535  
MFS Institutional International Equity Fund         298,430        10,790        (17,191      292,029  
MFS Institutional Money Market Portfolio         1,756,339        3,172,641        (3,278,647      1,650,333  
MFS Value Fund         186,867        7,505        (11,790      182,582  
Affiliated Issuers    Realized
Gain (Loss)
     Change in
Unrealized
Appreciation
(Depreciation)
     Capital Gain
Distributions
     Dividend
Income
     Ending
Value
 
MFS Growth Fund      $110,597        $170,947        $—        $—        $7,197,718  
MFS Institutional International Equity Fund      57,178        116,263                      7,145,950  
MFS Institutional Money Market Portfolio      (7      10               4,629        1,650,333  
MFS Value Fund      54,886        79,976               30,437        7,122,542  
  

 

 

    

 

 

    

 

 

    

 

 

    

 

 

 
     $222,654        $367,196        $—        $35,066        $23,116,543  
  

 

 

    

 

 

    

 

 

    

 

 

    

 

 

 

 

3


QUARTERLY REPORT
MFS®  Moderate
Allocation Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Investment Companies (h) – 100.0%
Bond Funds – 39.9%
MFS Emerging Markets Debt Fund - Class R6     11,535,911 $ 174,999,769
MFS Emerging Markets Debt Local Currency Fund - Class R6     15,986,617 116,702,300
MFS Global Bond Fund - Class R6     32,297,711 290,356,425
MFS Government Securities Fund - Class R6     58,673,730 580,869,930
MFS High Income Fund - Class R6     84,113,127 291,031,419
MFS Inflation-Adjusted Bond Fund - Class R6     39,027,153 407,053,207
MFS Total Return Bond Fund - Class R6     43,010,803 464,946,783
        $ 2,325,959,833
International Stock Funds – 13.0%
MFS International Growth Fund - Class R6     5,439,877 $ 174,728,858
MFS International New Discovery Fund - Class R6     1,729,541 58,268,243
MFS International Value Fund - Class R6     4,207,614 174,658,039
MFS Research International Fund - Class R6     19,249,571 348,417,231
        $ 756,072,371
Specialty Funds – 6.0%
MFS Absolute Return Fund - Class R6     5,965,525 $ 57,805,934
MFS Commodity Strategy Fund - Class R6 (v)     30,006,526 174,637,981
MFS Global Real Estate Fund - Class R6     7,396,102 116,858,419
        $ 349,302,334
U.S. Stock Funds – 41.0%
MFS Growth Fund - Class R6     5,114,582 $ 468,751,482
MFS Mid Cap Growth Fund - Class R6     23,785,185 410,294,435
MFS Mid Cap Value Fund - Class R6     17,693,567 403,413,325
MFS New Discovery Fund - Class R6     2,934,946 88,077,717
MFS New Discovery Value Fund - Class R6     5,944,598 86,850,577
MFS Research Fund - Class R6     10,954,015 466,860,135
MFS Value Fund - Class R6     11,844,931 462,070,777
        $ 2,386,318,448
Money Market Funds – 0.1%
MFS Institutional Money Market Portfolio, 1.11% (v)     5,223,127 $ 5,223,127
Total Investment Companies $5,822,876,113
Other Assets, Less Liabilities – (0.0)%   (2,604,503)
Net Assets – 100.0% $5,820,271,610
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $5,822,876,113 and $0, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
1


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, “fund” also refers to the underlying funds in which the fund-of-funds invests.
Equity securities, including restricted equity securities and equity securities held short, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities held short, for which there were no sales reported for that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service.  Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing service. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued at valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. Securities and other assets, including commodity-linked structured notes, generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other
2


Supplemental Information (unaudited) – continued
significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Mutual Funds $5,822,876,113 $— $— $5,822,876,113
For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds’ shareholder reports for further information regarding the levels used in valuing the underlying funds’ assets or liabilities.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $4,413,450,260
Gross unrealized appreciation 1,496,287,499
Gross unrealized depreciation (86,861,646)
Net unrealized appreciation (depreciation) $1,409,425,853
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be affiliated issuers:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Absolute Return Fund 6,117,056 21,361 (172,892) 5,965,525
MFS Commodity Strategy Fund 29,520,904 491,452 (5,830) 30,006,526
MFS Emerging Markets Debt Fund 11,792,005 138,414 (394,508) 11,535,911
MFS Emerging Markets Debt Local Currency Fund 16,739,266 180,145 (932,794) 15,986,617
MFS Global Bond Fund 33,648,324 143,974 (1,494,587) 32,297,711
MFS Global Real Estate Fund 7,579,515 7,531 (190,944) 7,396,102
MFS Government Securities Fund 59,206,467 471,631 (1,004,368) 58,673,730
MFS Growth Fund 5,421,964 1,905 (309,287) 5,114,582
MFS High Income Fund 85,028,323 1,074,974 (1,990,170) 84,113,127
MFS Inflation-Adjusted Bond Fund 39,061,305 331,830 (365,982) 39,027,153
MFS Institutional Money Market Portfolio 1,054 40,707,910 (35,485,837) 5,223,127
MFS International Growth Fund 5,759,174 866 (320,163) 5,439,877
MFS International New Discovery Fund 1,817,551 35 (88,045) 1,729,541
MFS International Value Fund 4,368,877 1,291 (162,554) 4,207,614
MFS Mid Cap Growth Fund 25,094,907 10,818 (1,320,540) 23,785,185
MFS Mid Cap Value Fund 18,142,807 36,545 (485,785) 17,693,567
MFS New Discovery Fund 3,061,031 5,430 (131,515) 2,934,946
MFS New Discovery Value Fund 5,853,428 163,168 (71,998) 5,944,598
MFS Research Fund 11,473,003 3,633 (522,621) 10,954,015
MFS Research International Fund 20,244,725 6,309 (1,001,463) 19,249,571
MFS Total Return Bond Fund 43,728,904 310,357 (1,028,458) 43,010,803
MFS Value Fund 12,333,618 60,454 (549,141) 11,844,931
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Absolute Return Fund $(71,993) $741,966 $— $172,649 $57,805,934
MFS Commodity Strategy Fund (24,368) 3,359,920 174,637,981
MFS Emerging Markets Debt Fund (94,126) 2,179,818 2,059,608 174,999,769
MFS Emerging Markets Debt Local Currency Fund (860,532) 4,793,355 1,289,198 116,702,300
MFS Global Bond Fund (2,319,113) 9,263,719 1,255,089 290,356,425
MFS Global Real Estate Fund 117,300 3,953,407 116,858,419
3


Supplemental Information (unaudited) – continued
Affiliated Issuer − continued Realized
Gain (Loss)
  Change in
Unrealized
Appreciation
(Depreciation)
  Capital Gain
Distributions
  Dividend
Income
  Ending
Value
MFS Government Securities Fund $(645,014)   $1,818,420   $—   $3,989,586   $580,869,930
MFS Growth Fund 11,318,259   7,132,726       468,751,482
MFS High Income Fund (328,206)   (521,722)     3,682,237   291,031,419
MFS Inflation-Adjusted Bond Fund (320,534)   331,455     1,762,429   407,053,207
MFS Institutional Money Market Portfolio (133)       6,924   5,223,127
MFS International Growth Fund 1,793,687   3,654,038       174,728,858
MFS International New Discovery Fund 486,675   1,112,957       58,268,243
MFS International Value Fund 1,422,572   527,690       174,658,039
MFS Mid Cap Growth Fund 5,122,398   9,285,865       410,294,435
MFS Mid Cap Value Fund 2,045,061   2,646,872       403,413,325
MFS New Discovery Fund 470,421   2,716,353       88,077,717
MFS New Discovery Value Fund 195,660   (812,320)   1,121,254   893,264   86,850,577
MFS Research Fund 3,510,893   11,220,608       466,860,135
MFS Research International Fund 1,606,718   7,154,215       348,417,231
MFS Total Return Bond Fund (323,340)   3,348,210     3,112,659   464,946,783
MFS Value Fund 3,738,449   5,087,600     1,998,031   462,070,777
  $26,840,734   $78,995,152   $1,121,254   $20,221,674   $5,822,876,113
4


QUARTERLY REPORT

August 31, 2017

 

LOGO

 

MFS® BLENDED RESEARCH® MID CAP EQUITY FUND

 

LOGO


PORTFOLIO OF INVESTMENTS

8/31/17 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

 

Issuer    Shares/Par     Value ($)  
Common Stocks - 97.9%  
Aerospace - 1.9%  
Orbital ATK, Inc.      4,513     $ 503,561  
Spirit AeroSystems Holdings, Inc., “A”      10,092       751,854  
Textron, Inc.      52,929       2,598,285  
    

 

 

 
      $ 3,853,700  
Airlines - 1.9%  
Alaska Air Group, Inc.      2,208     $ 164,849  
Copa Holdings S.A., “A”      18,198       2,257,826  
United Continental Holdings, Inc. (a)      21,154       1,310,702  
    

 

 

 
      $ 3,733,377  
Alcoholic Beverages - 1.3%  
Constellation Brands, Inc., “A”      6,361     $ 1,272,836  
Molson Coors Brewing Co.      14,209       1,275,258  
    

 

 

 
      $ 2,548,094  
Automotive - 0.7%  
Goodyear Tire & Rubber Co.      45,871     $ 1,389,891  
Biotechnology - 0.1%  
Illumina, Inc. (a)      1,129     $ 230,835  
Brokerage & Asset Managers - 1.0%  
Lazard Ltd.      25,236     $ 1,082,372  
Navient Corp.      72,993       963,508  
    

 

 

 
      $ 2,045,880  
Business Services - 6.7%  
DXC Technology Co.      39,661     $ 3,371,185  
Fidelity National Information Services, Inc.      32,142       2,986,635  
FleetCor Technologies, Inc. (a)      14,154       2,034,921  
Global Payments, Inc.      8,704       831,145  
Grand Canyon Education, Inc. (a)      31,883       2,616,000  
Total System Services, Inc.      22,152       1,531,146  
    

 

 

 
      $ 13,371,032  
Chemicals - 0.9%  
Celanese Corp.      7,852     $ 761,801  
FMC Corp.      10,751       926,951  
    

 

 

 
      $ 1,688,752  
Computer Software - 1.7%  
Cadence Design Systems, Inc. (a)      7,008     $ 275,344  
Intuit, Inc.      22,074       3,122,367  
    

 

 

 
      $ 3,397,711  
Computer Software - Systems - 3.0%  
NCR Corp.      57,480     $ 2,099,744  
NetApp, Inc.      35,531       1,373,628  
Tech Data Corp. (a)      4,358       480,644  
Western Digital Corp.      23,728       2,094,471  
    

 

 

 
      $ 6,048,487  

 

1


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Common Stocks - continued  
Conglomerates - 0.5%  
Leucadia National Corp.      41,164     $ 974,764  
Construction - 2.9%  
Owens Corning      45,595     $ 3,379,957  
Pulte Homes, Inc.      84,425       2,179,854  
Sherwin-Williams Co.      401       136,047  
    

 

 

 
      $ 5,695,858  
Consumer Products - 0.2%  
Nu Skin Enterprises, Inc., “A”      7,261     $ 441,687  
Containers - 1.8%  
Berry Global Group, Inc. (a)      15,687     $ 882,237  
Graphic Packaging Holding Co.      152,851       1,994,706  
Owens-Illinois, Inc. (a)      29,387       724,096  
    

 

 

 
      $ 3,601,039  
Electrical Equipment - 1.0%  
MSC Industrial Direct Co., Inc., “A”      27,469     $ 1,892,065  
Electronics - 1.4%  
Analog Devices, Inc.      1,612     $ 134,876  
Maxim Integrated Products, Inc.      18,282       853,038  
NVIDIA Corp.      9,028       1,529,704  
Silicon Laboratories, Inc. (a)      2,653       201,363  
    

 

 

 
      $ 2,718,981  
Energy - Independent - 3.2%  
Concho Resources, Inc. (a)      10,714     $ 1,188,933  
Energen Corp. (a)      38,882       1,993,869  
EQT Corp.      38,316       2,388,619  
Noble Energy, Inc.      31,437       747,257  
    

 

 

 
      $ 6,318,678  
Food & Beverages - 3.9%  
Bunge Ltd.      23,923     $ 1,785,373  
J.M. Smucker Co.      13,778       1,443,383  
Pilgrim’s Pride Corp. (a)      44,618       1,314,000  
Tyson Foods, Inc., “A”      49,024       3,103,219  
    

 

 

 
      $ 7,645,975  
Gaming & Lodging - 4.0%  
Marriott International, Inc., “A”      11,412     $ 1,182,055  
Norwegian Cruise Line Holdings Ltd. (a)      43,317       2,575,629  
Royal Caribbean Cruises Ltd.      22,264       2,770,977  
Vail Resorts, Inc.      5,881       1,340,574  
    

 

 

 
      $ 7,869,235  
General Merchandise - 1.2%  
Five Below, Inc. (a)      50,708     $ 2,412,180  
Health Maintenance Organizations - 1.4%  
Centene Corp. (a)      16,737     $ 1,487,082  
WellCare Health Plans, Inc. (a)      7,763       1,356,041  
    

 

 

 
      $ 2,843,123  

 

2


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Common Stocks - continued  
Insurance - 7.3%  
Ameriprise Financial, Inc.      13,892     $ 1,924,181  
First American Financial Corp.      27,566       1,352,388  
Hartford Financial Services Group, Inc.      59,115       3,196,348  
Lincoln National Corp.      18,332       1,244,010  
Loews Corp.      60,169       2,802,672  
Principal Financial Group, Inc.      12,752       797,255  
Unum Group      13,245       638,144  
XL Group Ltd.      61,788       2,530,836  
    

 

 

 
      $ 14,485,834  
Internet - 0.1%  
LogMeIn, Inc.      1,671     $ 191,162  
Leisure & Toys - 3.2%  
Electronic Arts, Inc. (a)      26,883     $ 3,266,285  
Take-Two Interactive Software, Inc. (a)      32,375       3,165,951  
    

 

 

 
      $ 6,432,236  
Machinery & Tools - 4.3%  
Allison Transmission Holdings, Inc.      51,959     $ 1,804,536  
Cummins, Inc.      9,008       1,435,695  
Ingersoll-Rand Co. Ltd., “A”      4,358       372,130  
Regal Beloit Corp.      38,024       2,867,010  
Trinity Industries, Inc.      24,244       699,197  
United Rentals, Inc. (a)      11,348       1,339,745  
    

 

 

 
      $ 8,518,313  
Medical & Health Technology & Services - 1.6%  
AmerisourceBergen Corp.      4,549     $ 365,057  
LifePoint Health, Inc. (a)      42,751       2,477,420  
Universal Health Services, Inc.      3,483       376,617  
    

 

 

 
      $ 3,219,094  
Medical Equipment - 6.2%  
Edwards Lifesciences Corp.      26,905     $ 3,058,022  
Hologic, Inc. (a)      58,889       2,273,115  
PerkinElmer, Inc.      40,039       2,682,213  
Steris PLC      26,907       2,345,214  
Zimmer Biomet Holdings, Inc.      17,423       1,990,926  
    

 

 

 
      $ 12,349,490  
Natural Gas - Distribution - 1.5%  
Atmos Energy Corp.      17,489     $ 1,539,729  
Sempra Energy      11,293       1,331,783  
    

 

 

 
      $ 2,871,512  
Network & Telecom - 1.3%  
Juniper Networks, Inc.      48,170     $ 1,335,754  
Motorola Solutions, Inc.      13,798       1,215,880  
    

 

 

 
      $ 2,551,634  
Oil Services - 1.2%  
NOW, Inc. (a)      138,730     $ 1,617,592  
Patterson-UTI Energy, Inc.      49,898       796,871  
    

 

 

 
      $ 2,414,463  

 

3


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Common Stocks - continued  
Other Banks & Diversified Financials - 4.2%  
Discover Financial Services      19,270     $ 1,135,967  
East West Bancorp, Inc.      55,699       3,084,054  
Synchrony Financial      58,422       1,798,813  
Wintrust Financial Corp.      32,921       2,396,978  
    

 

 

 
      $ 8,415,812  
Pharmaceuticals - 0.4%  
United Therapeutics Corp. (a)      6,715     $ 878,322  
Real Estate - 10.9%  
Annaly Capital Management, Inc., REIT      149,796     $ 1,872,450  
AvalonBay Communities, Inc., REIT      13,695       2,570,962  
Equity Lifestyle Properties, Inc., REIT      30,773       2,743,413  
Medical Properties Trust, Inc., REIT      199,360       2,623,578  
Mid-America Apartment Communities, Inc., REIT      27,543       2,932,228  
OUTFRONT Media, Inc., REIT      83,961       1,847,142  
Realogy Holdings Corp.      73,996       2,508,464  
STAG Industrial, Inc., REIT      87,782       2,457,018  
Washington Prime Group, Inc., REIT      254,077       2,121,543  
    

 

 

 
      $ 21,676,798  
Restaurants - 2.3%  
Aramark      52,202     $ 2,124,099  
Dave & Buster’s, Inc. (a)      8,570       501,002  
Domino’s Pizza, Inc.      10,633       1,937,971  
    

 

 

 
      $ 4,563,072  
Specialty Chemicals - 1.8%  
Trinseo S.A.      15,415     $ 1,031,264  
Univar, Inc. (a)      88,743       2,503,440  
    

 

 

 
      $ 3,534,704  
Specialty Stores - 3.3%  
Best Buy Co., Inc.      49,864     $ 2,705,621  
Michaels Co., Inc. (a)      8,328       186,964  
Office Depot, Inc.      168,218       721,655  
Ross Stores, Inc.      44,691       2,612,189  
Urban Outfitters, Inc. (a)      14,091       288,020  
    

 

 

 
      $ 6,514,449  
Telecommunications - Wireless - 0.3%  
SBA Communications Corp., REIT (a)      3,501     $ 537,579  
Telephone Services - 0.7%  
CenturyLink, Inc. (l)      75,080     $ 1,480,578  
Utilities - Electric Power - 6.6%  
AES Corp.      61,736     $ 681,565  
Avangrid, Inc.      21,505       1,049,874  
DTE Energy Co.      6,783       761,867  
NRG Energy, Inc.      73,124       1,821,519  
PPL Corp.      76,128       2,987,263  
Public Service Enterprise Group, Inc.      55,989       2,622,525  
Xcel Energy, Inc.      65,160       3,225,420  
    

 

 

 
      $ 13,150,033  
Total Common Stocks     $ 194,506,429  

 

4


Portfolio of Investments (unaudited) – continued

 

Issuer    Shares/Par     Value ($)  
Investment Companies (h) - 1.9%  
Money Market Funds - 1.9%  
MFS Institutional Money Market Portfolio, 1.11% (v)      3,674,001     $ 3,674,001  
Collateral for Securities Loaned - 0.7%  
JPMorgan U.S. Government Money Market Fund, 0.93% (j)      1,417,500     $ 1,417,500  
Other Assets, Less Liabilities - (0.5)%       (921,508
Net Assets - 100.0%     $ 198,676,422  

 

(a) Non-income producing security.
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund’s investments in affiliated issuers and in unaffiliated issuers were $3,674,001 and $195,923,929, respectively.
(j) The rate quoted is the annualized seven-day yield of the fund at period end.
(l) A portion of this security is on loan.
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.

The following abbreviations are used in this report and are defined:

 

PLC   Public Limited Company
REIT   Real Estate Investment Trust

See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.

 

5


Supplemental Information

8/31/17 (unaudited)

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services – Investment Companies.

(1) Investment Valuations

Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund’s assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser’s own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund’s assets or liabilities:

 

Financial Instruments    Level 1      Level 2      Level 3      Total  
Equity Securities      $194,506,429        $—        $—        $194,506,429  
Mutual Funds      5,091,501                      5,091,501  
Total      $199,597,930        $—        $—        $199,597,930  

For further information regarding security characteristics, see the Portfolio of Investments.

(2) Portfolio Securities

The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:

 

Aggregate cost      $183,816,701  
Gross unrealized appreciation      22,952,972  
Gross unrealized depreciation      (7,171,743
Net unrealized appreciation (depreciation)      $15,781,229  

 

6


Supplemental Information (unaudited) – continued

 

(3) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:

 

Affiliated Issuer            Beginning
Shares/Par
Amount
     Acquisitions
Shares/Par
Amount
     Dispositions
Shares/Par
Amount
     Ending
Shares/Par
Amount
 
MFS Institutional Money Market Portfolio         1,980,607        9,916,701        (8,223,307      3,674,001  
Affiliated Issuer    Realized
Gain (Loss)
    

Change in
Unrealized
Appreciation

(Depreciation)

     Capital Gain
Distributions
     Dividend
Income
     Ending
Value
 
MFS Institutional Money Market Portfolio      $—        $118        $—        $7,749        $3,674,001  

 

7


QUARTERLY REPORT
MFS®  Blended Research®  Small Cap Equity Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 99.0%
Airlines – 0.0%  
SkyWest, Inc.     683 $ 23,700
Biotechnology – 4.1%  
Acorda Therapeutics, Inc. (a)     14,482 $ 301,225
AMAG Pharmaceuticals, Inc. (a)     24,011 400,984
Bruker BioSciences Corp.     9,875 287,264
Exact Sciences Corp. (a)     17,434 730,310
MiMedx Group, Inc. (a)(l)     27,500 447,425
Natera, Inc. (a)     5,739 70,877
Vanda Pharmaceuticals, Inc. (a)     3,815 65,618
        $ 2,303,703
Broadcasting – 0.3%  
MDC Partners, Inc. (a)     14,401 $ 146,890
Brokerage & Asset Managers – 0.3%  
Legg Mason, Inc.     754 $ 28,795
Moelis & Co., “A”     2,759 108,705
OM Asset Management PLC     1,861 26,296
        $ 163,796
Business Services – 4.1%  
Conduent, Inc. (a)     23,920 $ 394,919
Forrester Research, Inc.     15,736 641,242
Grand Canyon Education, Inc. (a)     8,754 718,266
Travelport Worldwide Ltd.     35,572 538,560
        $ 2,292,987
Cable TV – 0.9%  
Cable One, Inc.     631 $ 478,765
Computer Software – 4.0%  
Aspen Technology, Inc. (a)     8,648 $ 546,986
Cornerstone OnDemand, Inc. (a)     13,306 465,444
Manhattan Associates, Inc. (a)     10,452 439,507
Paylocity Holding Corp. (a)     15,736 773,267
        $ 2,225,204
Computer Software - Systems – 5.9%  
EPAM Systems, Inc. (a)     6,217 $ 505,629
NCR Corp. (a)     17,214 628,828
Presidio, Inc. (a)     19,456 270,633
Rapid7, Inc. (a)     42,312 713,380
Tech Data Corp. (a)     8,463 933,384
Verint Systems, Inc. (a)     7,192 285,522
        $ 3,337,376
Construction – 2.0%  
Armstrong World Industries, Inc. (a)     2,997 $ 142,357
GMS, Inc. (a)     3,056 98,342
KB Home     7,734 165,508
Trex Co., Inc. (a)     9,353 710,828
        $ 1,117,035
1


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Consumer Services – 0.9%  
Carriage Services, Inc.     1,205 $ 29,510
ServiceMaster Global Holdings, Inc. (a)     9,581 451,457
        $ 480,967
Electrical Equipment – 2.6%  
TriMas Corp. (a)     31,864 $ 771,109
WESCO International, Inc. (a)     13,489 680,520
        $ 1,451,629
Electronics – 3.1%  
Amkor Technology, Inc. (a)     25,547 $ 224,303
Benchmark Electronics, Inc. (a)     7,558 245,635
Integrated Device Technology, Inc. (a)     5,212 128,788
Jabil Circuit, Inc.     14,892 466,864
OSI Systems, Inc. (a)     1,766 146,684
Sanmina Corp. (a)     10,198 381,915
TTM Technologies, Inc. (a)     12,620 179,709
        $ 1,773,898
Energy - Independent – 2.0%  
Delek U.S. Holdings, Inc.     15,335 $ 379,081
Energen Corp. (a)     4,734 242,760
Par Pacific Holdings, Inc. (a)     16,735 298,050
PBF Energy, Inc., “A”     7,344 173,906
Westmoreland Coal Co. (a)     11,683 27,221
        $ 1,121,018
Engineering - Construction – 2.2%  
KBR, Inc.     47,065 $ 765,748
MasTec, Inc. (a)     9,075 370,260
Tutor Perini Corp. (a)     3,220 84,203
        $ 1,220,211
Entertainment – 0.1%  
Ascent Capital Group, Inc., “A” (a)     7,465 $ 74,127
Food & Beverages – 3.1%  
Dean Foods Co.     30,155 $ 331,705
Snyders-Lance, Inc.     18,689 663,833
SpartanNash Co.     9,242 227,723
TreeHouse Foods, Inc. (a)     7,851 525,939
        $ 1,749,200
Gaming & Lodging – 0.5%  
Caesars Entertainment Corp. (a)(l)     23,290 $ 270,164
Health Maintenance Organizations – 0.7%  
Molina Healthcare, Inc. (a)     6,329 $ 405,056
Insurance – 4.3%  
American Equity Investment Life Holding Co.     20,230 $ 561,585
Hanover Insurance Group, Inc.     625 61,362
HCI Group, Inc.     7,379 287,707
Heritage Insurance Holdings, Inc. (l)     18,784 213,762
Safety Insurance Group, Inc.     4,350 310,590
Third Point Reinsurance Ltd. (a)     53,553 752,420
Universal Insurance Holdings, Inc.     11,876 254,740
        $ 2,442,166
2


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Internet – 2.3%  
Blucora, Inc. (a)     19,206 $ 437,897
LogMeIn, Inc.     6,383 730,215
Web.Com Group, Inc. (a)     5,592 141,478
        $ 1,309,590
Machinery & Tools – 6.2%  
Herman Miller, Inc.     14,293 $ 480,960
IPG Photonics Corp. (a)     4,759 836,585
ITT, Inc.     13,724 553,901
Knoll, Inc.     12,068 217,827
Park-Ohio Holdings Corp.     7,377 293,973
Regal Beloit Corp.     2,903 218,886
SPX FLOW, Inc. (a)     17,950 600,787
Steelcase, Inc., “A”     7,120 93,984
Titan Machinery, Inc. (a)     16,588 213,985
        $ 3,510,888
Medical & Health Technology & Services – 0.5%  
Kindred Healthcare, Inc.     37,083 $ 300,372
Medical Equipment – 5.8%  
Biotelemetry, Inc. (a)     14,676 $ 545,213
CONMED Corp.     14,498 719,101
Halyard Health, Inc. (a)     12,175 551,406
Integer Holdings Corp. (a)     10,115 464,784
Integra LifeSciences Holdings Corp. (a)     7,290 371,717
OraSure Technologies, Inc. (a)     28,863 589,094
        $ 3,241,315
Metals & Mining – 0.2%  
Ryerson Holding Corp. (a)     12,744 $ 109,598
Natural Gas - Distribution – 0.3%  
ONE Gas, Inc.     482 $ 36,266
Southwest Gas Holdings, Inc.     1,695 134,786
        $ 171,052
Oil Services – 2.9%  
Exterran Holdings, Inc. (a)     11,076 $ 307,248
Keane Group, Inc. (a)     19,928 258,068
McDermott International, Inc. (a)     46,586 286,038
NOW, Inc. (a)     38,701 451,254
U.S. Silica Holdings, Inc.     11,414 310,575
        $ 1,613,183
Other Banks & Diversified Financials – 11.7%  
Bank of N.T. Butterfield & Son Ltd.     3,676 $ 120,867
CAI International, Inc. (a)     13,115 406,434
Cathay General Bancorp, Inc.     13,143 463,554
East West Bancorp, Inc.     14,736 815,932
Enova International, Inc. (a)     22,786 271,153
First Interstate BancSystem, Inc.     17,248 607,130
Glacier Bancorp, Inc.     2,042 67,815
Legacytextas Financial Group, Inc.     13,689 492,667
OFG Bancorp     11,074 96,344
OneMain Holdings, Inc. (a)     11,050 302,438
Popular, Inc.     7,979 318,442
Preferred Bank     9,634 518,309
Regional Management Corp. (a)     15,125 331,994
3


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Other Banks & Diversified Financials – continued  
Triton International Ltd. of Bermuda     10,870 $ 401,320
Western Alliance Bancorp. (a)     8,149 393,026
Wintrust Financial Corp.     11,006 801,347
World Acceptance Corp. (a)     2,113 158,095
        $ 6,566,867
Pharmaceuticals – 1.8%  
Catalent, Inc. (a)     3,849 $ 158,925
Endo International PLC (a)     13,466 118,366
Horizon Pharma PLC (a)     28,003 383,081
Mallinckrodt PLC (a)     1,383 56,814
Sucampo Pharmaceuticals, Inc. (a)     3,003 35,285
TherapeuticsMD, Inc. (a)     46,792 280,752
        $ 1,033,223
Printing & Publishing – 1.0%  
LSC Communications, Inc.     1,833 $ 29,530
Quad/Graphics, Inc.     15,430 294,096
Time, Inc.     20,241 266,169
        $ 589,795
Real Estate – 10.0%  
Ashford Hospitality Trust, REIT     44,178 $ 274,345
CoreCivic, Inc., REIT     9,283 248,784
GEO Group, Inc., REIT     7,811 215,896
Gramercy Property Trust, REIT     26,813 816,724
Hospitality Properties Trust, REIT     8,434 230,754
Medical Properties Trust, Inc., REIT     54,728 720,221
Mid-America Apartment Communities, Inc., REIT     4,521 481,306
RE/MAX Holdings, Inc., “A”     13,189 807,826
Realogy Holdings Corp.     19,908 674,881
Ryman Hospitality Properties, Inc., REIT     625 37,138
STAG Industrial, Inc., REIT     5,717 160,019
Washington Prime Group, Inc., REIT     92,446 771,924
Xenia Hotels & Resorts Inc., REIT     10,145 202,494
        $ 5,642,312
Restaurants – 1.8%  
BJ's Restaurants, Inc. (a)     2,773 $ 83,467
Bloomin Brands, Inc.     18,494 314,583
Brinker International, Inc.     13,149 410,512
Carrols Restaurant Group, Inc. (a)     18,744 204,310
        $ 1,012,872
Specialty Chemicals – 5.0%  
A. Schulman, Inc.     13,229 $ 402,162
Andersons, Inc.     9,213 293,434
Chemours Co.     3,413 167,476
Kronos Worldwide, Inc.     15,263 319,454
Pacific Ethanol, Inc. (a)     12,206 61,030
Renewable Energy Group, Inc. (a)     24,643 298,180
Trinseo S.A.     7,904 528,778
Univar, Inc. (a)     26,647 751,712
        $ 2,822,226
Specialty Stores – 2.5%  
Citi Trends, Inc.     33,596 $ 609,095
Express, Inc. (a)     22,588 143,886
Michaels Co., Inc. (a)     1,847 41,465
4


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Specialty Stores – continued  
Sally Beauty Holdings, Inc. (a)     7,805 $ 145,095
Urban Outfitters, Inc. (a)     19,484 398,253
Zumiez, Inc. (a)     7,703 95,902
        $ 1,433,696
Telecommunications - Wireless – 0.5%  
Telephone and Data Systems, Inc.     10,215 $ 299,402
Trucking – 2.0%  
Hub Group, Inc., “A” (a)     4,945 $ 190,135
Marten Transport Ltd.     9,209 157,934
Werner Enterprises, Inc.     23,708 784,735
        $ 1,132,804
Utilities - Electric Power – 3.4%  
Atlantica Yield PLC     21,378 $ 443,807
NRG Energy, Inc.     24,813 618,092
NRG Yield, Inc., “A”     11,766 214,024
PNM Resources, Inc.     7,901 335,002
Spark Energy, Inc., “A” (l)     20,646 327,239
        $ 1,938,164
Total Common Stocks   $55,805,251
Investment Companies (h) – 0.6%
Money Market Funds – 0.6%
MFS Institutional Money Market Portfolio, 1.11% (v)     332,773 $ 332,773
Collateral for Securities Loaned – 1.6%  
State Street Navigator Securities Lending Government Money Market Portfolio, 1.01% (j)     883,241 $ 883,241
Other Assets, Less Liabilities – (1.2)%   (668,849)
Net Assets – 100.0% $56,352,416
(a) Non-income producing security.      
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $332,773 and $56,688,492, respectively.      
(j) The rate quoted is the annualized seven-day yield of the fund at period end.      
(l) A portion of this security is on loan.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
The following abbreviations are used in this report and are defined:
PLC Public Limited Company
REIT Real Estate Investment Trust
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
5


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities $55,805,251 $— $— $55,805,251
Mutual Funds 1,216,014 1,216,014
Total $57,021,265 $— $— $57,021,265
For further information regarding security characteristics, see the Portfolio of Investments.
(2) Securities Lending Collateral
At August 31, 2017, the value of securities loaned was $1,075,457. These loans were collateralized by cash of $883,241 and U.S. Treasury Obligations of $221,648.
6


Supplemental Information (unaudited) – continued
(3) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $54,146,035
Gross unrealized appreciation 6,299,404
Gross unrealized depreciation (3,424,174)
Net unrealized appreciation (depreciation) $2,875,230
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
(4) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Institutional Money Market Portfolio 1,122,118 5,076,529 (5,865,874) 332,773
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Institutional Money Market Portfolio $136 $(59) $— $2,332 $332,773
7


QUARTERLY REPORT
MFS®  Blended Research®  Growth Equity Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 99.0%
Aerospace – 4.5%  
Boeing Co.     9,587 $ 2,297,620
Northrop Grumman Corp.     5,395 1,468,573
Textron, Inc.     17,448 856,522
United Technologies Corp.     10,809 1,294,054
        $ 5,916,769
Airlines – 0.6%  
Copa Holdings S.A., “A”     5,928 $ 735,487
Alcoholic Beverages – 0.4%  
Constellation Brands, Inc., “A”     2,729 $ 546,073
Automotive – 0.6%  
Lear Corp.     5,198 $ 777,309
Biotechnology – 4.7%  
Amgen, Inc.     6,324 $ 1,124,217
Biogen, Inc. (a)     7,010 2,219,085
Celgene Corp. (a)     18,718 2,600,492
Illumina, Inc. (a)     1,234 252,304
        $ 6,196,098
Business Services – 6.4%  
Accenture PLC, “A”     11,138 $ 1,456,405
DXC Technology Co.     19,826 1,685,210
Fidelity National Information Services, Inc.     10,098 938,306
FleetCor Technologies, Inc. (a)     9,823 1,412,253
Global Payments, Inc.     14,352 1,370,472
Total System Services, Inc.     23,354 1,614,229
        $ 8,476,875
Cable TV – 3.4%  
Charter Communications, Inc., “A” (a)     2,971 $ 1,184,062
Comcast Corp., “A”     82,315 3,342,812
        $ 4,526,874
Chemicals – 1.8%  
FMC Corp.     6,948 $ 599,057
Monsanto Co.     14,647 1,716,628
        $ 2,315,685
Computer Software – 6.9%  
Adobe Systems, Inc. (a)     14,516 $ 2,252,302
Intuit, Inc.     13,895 1,965,448
Microsoft Corp.     64,397 4,814,964
        $ 9,032,714
Computer Software - Systems – 7.7%  
Apple, Inc.     49,780 $ 8,163,920
International Business Machines Corp.     2,813 402,343
NCR Corp. (a)     23,958 875,186
NetApp, Inc.     17,910 692,401
        $ 10,133,850
1


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Construction – 0.9%  
Owens Corning     10,722 $ 794,822
Sherwin-Williams Co.     1,108 375,911
        $ 1,170,733
Consumer Products – 0.4%  
Estee Lauder Cos., Inc., “A”     5,085 $ 544,044
Consumer Services – 1.8%  
H&R Block, Inc.     8,258 $ 220,819
Priceline Group, Inc. (a)     1,196 2,215,088
        $ 2,435,907
Containers – 1.0%  
Berry Global Group, Inc. (a)     24,115 $ 1,356,228
Electrical Equipment – 0.7%  
MSC Industrial Direct Co., Inc., “A”     7,024 $ 483,813
Rockwell Automation, Inc.     2,865 470,032
        $ 953,845
Electronics – 3.7%  
Applied Materials, Inc.     13,553 $ 611,511
NVIDIA Corp.     17,233 2,919,960
Texas Instruments, Inc.     16,195 1,341,270
        $ 4,872,741
Energy - Independent – 0.2%  
Parsley Energy, Inc., “A” (a)     8,790 $ 220,189
Food & Beverages – 4.0%  
Archer Daniels Midland Co.     24,109 $ 996,184
Coca-Cola Co.     3,880 176,734
PepsiCo, Inc.     22,891 2,649,175
Tyson Foods, Inc., “A”     22,406 1,418,300
        $ 5,240,393
Gaming & Lodging – 3.0%  
Carnival Corp.     8,869 $ 616,218
Marriott International, Inc., “A”     15,828 1,639,464
Norwegian Cruise Line Holdings Ltd. (a)     3,815 226,840
Royal Caribbean Cruises Ltd.     11,307 1,407,269
        $ 3,889,791
General Merchandise – 1.6%  
Costco Wholesale Corp.     13,037 $ 2,043,419
Health Maintenance Organizations – 2.3%  
Humana Inc.     2,555 $ 658,219
UnitedHealth Group, Inc.     10,286 2,045,885
WellCare Health Plans, Inc. (a)     1,770 309,184
        $ 3,013,288
Insurance – 1.6%  
MetLife, Inc.     23,564 $ 1,103,502
Prudential Financial, Inc.     10,114 1,032,437
        $ 2,135,939
2


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Internet – 8.4%  
Alphabet, Inc., “A” (a)     2,679 $ 2,559,088
Alphabet, Inc., “C” (a)     2,845 2,672,394
Facebook, Inc., “A” (a)     33,931 5,835,114
        $ 11,066,596
Leisure & Toys – 2.8%  
Electronic Arts, Inc. (a)     16,800 $ 2,041,200
Take-Two Interactive Software, Inc. (a)     16,543 1,617,740
        $ 3,658,940
Machinery & Tools – 1.9%  
Roper Technologies, Inc.     4,920 $ 1,134,847
United Rentals, Inc. (a)     11,749 1,387,087
        $ 2,521,934
Medical & Health Technology & Services – 2.3%  
Express Scripts Holding Co. (a)     13,707 $ 861,074
HCA Healthcare, Inc. (a)     16,840 1,324,634
McKesson Corp.     5,505 821,952
        $ 3,007,660
Medical Equipment – 2.8%  
Align Technology, Inc. (a)     1,944 $ 343,582
Edwards Lifesciences Corp. (a)     15,503 1,762,071
Medtronic PLC     12,677 1,022,020
Thermo Fisher Scientific, Inc.     2,664 498,541
        $ 3,626,214
Network & Telecom – 0.9%  
Cisco Systems, Inc.     36,360 $ 1,171,156
Other Banks & Diversified Financials – 1.8%  
Discover Financial Services     21,809 $ 1,285,640
Visa, Inc., “A”     10,505 1,087,478
        $ 2,373,118
Pharmaceuticals – 2.1%  
Bristol-Myers Squibb Co.     9,375 $ 567,000
Eli Lilly & Co.     26,604 2,162,639
        $ 2,729,639
Railroad & Shipping – 0.8%  
Union Pacific Corp.     9,889 $ 1,041,312
Real Estate – 2.3%  
Alexandria Real Estate Equities, Inc., REIT     10,822 $ 1,312,817
Equity Lifestyle Properties, Inc., REIT     10,503 936,342
Realogy Holdings Corp.     22,265 754,784
        $ 3,003,943
Restaurants – 1.9%  
Domino's Pizza, Inc.     7,790 $ 1,419,806
Starbucks Corp.     20,941 1,148,823
        $ 2,568,629
3


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Specialty Chemicals – 1.2%  
Air Products & Chemicals, Inc.     4,799 $ 697,631
Univar, Inc. (a)     30,471 859,587
        $ 1,557,218
Specialty Stores – 6.7%  
Amazon.com, Inc. (a)     4,788 $ 4,695,113
Best Buy Co., Inc.     26,067 1,414,395
Home Depot, Inc.     9,836 1,474,121
Michaels Co., Inc. (a)     26,489 594,678
Ross Stores, Inc.     11,459 669,779
        $ 8,848,086
Telecommunications - Wireless – 1.2%  
American Tower Corp., REIT     4,012 $ 593,977
SBA Communications Corp., REIT (a)     6,650 1,021,107
        $ 1,615,084
Tobacco – 2.2%  
Altria Group, Inc.     25,291 $ 1,603,450
Philip Morris International, Inc.     10,668 1,247,409
        $ 2,850,859
Utilities - Electric Power – 1.5%  
AES Corp.     64,635 $ 713,570
NRG Energy, Inc.     51,793 1,290,164
        $ 2,003,734
Total Common Stocks   $130,178,373
Investment Companies (h) – 0.9%
Money Market Funds – 0.9%
MFS Institutional Money Market Portfolio, 1.11% (v)     1,243,998 $ 1,243,998
Other Assets, Less Liabilities – 0.1%   118,525
Net Assets – 100.0% $131,540,896
(a) Non-income producing security.      
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $1,243,998 and $130,178,373, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
The following abbreviations are used in this report and are defined:
PLC Public Limited Company
REIT Real Estate Investment Trust
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
4


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities $130,178,373 $— $— $130,178,373
Mutual Funds 1,243,998 1,243,998
Total $131,422,371 $— $— $131,422,371
For further information regarding security characteristics, see the Portfolio of Investments.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $111,666,030
Gross unrealized appreciation 21,076,041
Gross unrealized depreciation (1,319,700)
Net unrealized appreciation (depreciation) $19,756,341
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
5


Supplemental Information (unaudited) – continued
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Institutional Money Market Portfolio 1,184,572 4,830,238 (4,770,812) 1,243,998
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Institutional Money Market Portfolio $126 $— $— $3,605 $1,243,998
6


QUARTERLY REPORT
MFS®  Blended Research®  Value Equity Fund


Portfolio of Investments
8/31/17 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 98.2%
Aerospace – 2.8%  
Northrop Grumman Corp.     3,396 $ 924,425
Textron, Inc.     8,506 417,560
United Technologies Corp.     18,357 2,197,700
        $ 3,539,685
Airlines – 1.0%  
Copa Holdings S.A., “A”     9,771 $ 1,212,288
Alcoholic Beverages – 0.7%  
Constellation Brands, Inc., “A”     4,416 $ 883,642
Apparel Manufacturers – 0.6%  
PVH Corp.     5,984 $ 753,326
Automotive – 0.7%  
Lear Corp.     6,063 $ 906,661
Biotechnology – 1.9%  
Biogen, Inc. (a)     2,415 $ 764,492
Celgene Corp. (a)     11,645 1,617,840
        $ 2,382,332
Business Services – 2.6%  
Amdocs Ltd.     4,451 $ 288,380
DXC Technology Co.     21,162 1,798,770
Global Payments, Inc.     11,590 1,106,729
        $ 3,193,879
Cable TV – 1.3%  
Comcast Corp., “A”     39,473 $ 1,602,999
Chemicals – 0.6%  
LyondellBasell Industries N.V., “A”     8,936 $ 809,512
Computer Software - Systems – 1.2%  
Hewlett Packard Enterprise     82,797 $ 1,495,314
Construction – 1.5%  
Owens Corning     24,509 $ 1,816,852
Consumer Products – 2.7%  
Newell Brands, Inc.     22,946 $ 1,107,833
Procter & Gamble Co.     24,601 2,269,934
        $ 3,377,767
Containers – 0.9%  
Graphic Packaging Holding Co.     82,603 $ 1,077,969
Electrical Equipment – 0.7%  
General Electric Co.     14,537 $ 356,883
W.W. Grainger, Inc.     3,137 509,982
        $ 866,865
1


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Electronics – 1.8%  
Applied Materials, Inc.     18,120 $ 817,574
Intel Corp.     38,996 1,367,590
        $ 2,185,164
Energy - Independent – 6.2%  
Anadarko Petroleum Corp.     26,517 $ 1,085,341
EOG Resources, Inc.     17,500 1,487,325
Noble Energy, Inc.     47,149 1,120,732
Occidental Petroleum Corp.     19,677 1,174,717
Phillips 66     21,407 1,794,120
Valero Energy Corp.     16,150 1,099,815
        $ 7,762,050
Energy - Integrated – 2.4%  
Chevron Corp.     6,674 $ 718,256
Exxon Mobil Corp.     29,820 2,276,160
        $ 2,994,416
Food & Beverages – 3.6%  
Archer Daniels Midland Co.     37,500 $ 1,549,500
Bunge Ltd.     12,680 946,309
J.M. Smucker Co.     11,583 1,213,435
Tyson Foods, Inc., “A”     11,900 753,270
        $ 4,462,514
Gaming & Lodging – 1.9%  
Carnival Corp.     22,699 $ 1,577,126
Royal Caribbean Cruises Ltd.     6,445 802,145
        $ 2,379,271
General Merchandise – 0.7%  
Wal-Mart Stores, Inc.     11,208 $ 875,009
Health Maintenance Organizations – 0.3%  
Humana Inc.     1,666 $ 429,195
Insurance – 7.3%  
Athene Holding Ltd. (a)     12,379 $ 662,400
Berkshire Hathaway, Inc., “B” (a)     9,841 1,782,795
Chubb Ltd.     13,861 1,960,223
MetLife, Inc.     39,684 1,858,402
Prudential Financial, Inc.     15,722 1,604,902
XL Group Ltd.     29,417 1,204,920
        $ 9,073,642
Machinery & Tools – 2.3%  
Ingersoll-Rand Co. Ltd., “A”     7,154 $ 610,880
IPG Photonics Corp. (a)     5,706 1,003,058
Regal Beloit Corp.     4,666 351,816
United Rentals, Inc. (a)     7,781 918,625
        $ 2,884,379
Major Banks – 12.1%  
Bank of America Corp.     179,031 $ 4,277,051
Goldman Sachs Group, Inc.     8,293 1,855,476
JPMorgan Chase & Co.     51,951 4,721,826
PNC Financial Services Group, Inc.     17,297 2,169,217
2


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Major Banks – continued  
Wells Fargo & Co.     41,305 $ 2,109,446
        $ 15,133,016
Medical & Health Technology & Services – 3.1%  
Express Scripts Holding Co. (a)     9,474 $ 595,157
HCA Healthcare, Inc. (a)     18,758 1,475,504
McKesson Corp.     12,269 1,831,884
        $ 3,902,545
Medical Equipment – 4.7%  
Abbott Laboratories     45,237 $ 2,304,373
Thermo Fisher Scientific, Inc.     11,012 2,060,786
Zimmer Biomet Holdings, Inc.     12,634 1,443,687
        $ 5,808,846
Natural Gas - Distribution – 0.6%  
Sempra Energy     5,919 $ 698,028
Network & Telecom – 2.6%  
Cisco Systems, Inc.     99,470 $ 3,203,929
Oil Services – 1.1%  
Halliburton Co.     35,741 $ 1,392,827
Other Banks & Diversified Financials – 5.3%  
Citigroup, Inc.     51,629 $ 3,512,321
Discover Financial Services     28,556 1,683,376
Synchrony Financial     21,823 671,930
Zions Bancorporation     17,317 756,060
        $ 6,623,687
Pharmaceuticals – 4.8%  
Bristol-Myers Squibb Co.     15,996 $ 967,438
Eli Lilly & Co.     17,320 1,407,943
Johnson & Johnson     16,481 2,181,590
Pfizer, Inc.     43,215 1,465,853
        $ 6,022,824
Railroad & Shipping – 1.1%  
Union Pacific Corp.     12,992 $ 1,368,058
Real Estate – 5.0%  
Annaly Mortgage Management, Inc., REIT     85,894 $ 1,073,675
CoreCivic, Inc., REIT     14,334 384,151
Medical Properties Trust, Inc., REIT     93,366 1,228,697
Mid-America Apartment Communities, Inc., REIT     12,399 1,319,998
Realogy Holdings Corp.     44,846 1,520,279
Washington Prime Group, Inc., REIT     82,460 688,541
        $ 6,215,341
Restaurants – 0.6%  
Aramark     19,788 $ 805,174
Specialty Chemicals – 0.5%  
Air Products & Chemicals, Inc.     4,412 $ 641,372
3


Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Specialty Stores – 1.7%  
Best Buy Co., Inc.     29,576 $ 1,604,794
Urban Outfitters, Inc. (a)     25,099 513,023
        $ 2,117,817
Telecommunications - Wireless – 1.1%  
Sprint Corp. (a)     72,401 $ 597,308
T-Mobile U.S., Inc. (a)     12,114 783,897
        $ 1,381,205
Telephone Services – 1.1%  
AT&T, Inc.     36,961 $ 1,384,559
Tobacco – 1.5%  
Altria Group, Inc.     14,268 $ 904,591
Philip Morris International, Inc.     7,814 913,691
        $ 1,818,282
Utilities - Electric Power – 5.6%  
American Electric Power Co., Inc.     11,269 $ 829,737
DTE Energy Co.     13,279 1,491,497
Exelon Corp.     53,324 2,019,380
NextEra Energy, Inc.     5,391 811,399
PPL Corp.     46,576 1,827,642
        $ 6,979,655
Total Common Stocks   $122,461,896
Investment Companies (h) – 1.3%
Money Market Funds – 1.3%
MFS Institutional Money Market Portfolio, 1.11% (v)     1,607,642 $ 1,607,642
Other Assets, Less Liabilities – 0.5%   621,516
Net Assets – 100.0% $124,691,054
(a) Non-income producing security.      
(h) An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $1,607,642 and $122,461,896, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
The following abbreviations are used in this report and are defined:
REIT Real Estate Investment Trust
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
4


Supplemental Information
8/31/17 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of August 31, 2017 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities $122,461,896 $— $— $122,461,896
Mutual Funds 1,607,642 1,607,642
Total $124,069,538 $— $— $124,069,538
For further information regarding security characteristics, see the Portfolio of Investments.
(2) Portfolio Securities
The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:
Aggregate cost $114,060,165
Gross unrealized appreciation 13,880,973
Gross unrealized depreciation (3,871,600)
Net unrealized appreciation (depreciation) $10,009,373
The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.
5


Supplemental Information (unaudited) – continued
(3) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the fund assumes the following to be an affiliated issuer:
Affiliated Issuer Beginning
Shares/Par
Amount
Acquisitions
Shares/Par
Amount
Dispositions
Shares/Par
Amount
Ending
Shares/Par
Amount
MFS Institutional Money Market Portfolio 1,704,145 6,432,405 (6,528,908) 1,607,642
Affiliated Issuer Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Capital Gain
Distributions
Dividend
Income
Ending
Value
MFS Institutional Money Market Portfolio $(163) $(62) $— $5,457 $1,607,642
6


ITEM 2. CONTROLS AND PROCEDURES.

 

(a) Based upon their evaluation of the effectiveness of the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the “Act”)) as conducted within 90 days of the filing date of this Form N-Q, the registrant’s principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

 

(b) There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

 

ITEM 3. EXHIBITS.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2): Attached hereto.


Notice

A copy of the Amended and Restated Declaration of Trust, as amended, of the Registrant is on file with the Secretary of State of The Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Registrant: MFS SERIES TRUST X

 

By (Signature and Title)*    DAVID L. DILORENZO
  David L. DiLorenzo, President

Date: October 17, 2017

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

 

By (Signature and Title)*    DAVID L. DILORENZO
  David L. DiLorenzo, President (Principal Executive Officer)

Date: October 17, 2017

 

By (Signature and Title)*    JAMES O. YOST
  James O. Yost, Treasurer (Principal Financial Officer and Accounting Officer)

Date: October 17, 2017

 

* Print name and title of each signing officer under his or her signature.

Dates Referenced Herein   and   Documents Incorporated by Reference

This ‘N-Q’ Filing    Date    Other Filings
Filed on / Effective on:10/26/17N-Q
10/17/17
For Period End:8/31/17N-Q
 List all Filings 
Top
Filing Submission 0001193125-17-320992   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Fri., Apr. 19, 2:57:25.3am ET